Spam mailings take up space in your inbox, distract you from the necessary information, and can cause data loss and even system hacking. For example, an office worker who opens a spam link unintentionally becomes the culprit for a virus to penetrate his work computer. Endless messages about sales and other news from stores where you do not plan to purchase anything are annoying.
To prevent spam mailings from reaching your email, you need to take measures. The effectiveness of filtering depends on what is used to combat spam. If the filters are configured incorrectly, spammers will always find a loophole to send mailings to all server addresses, bypassing the filtering.
Characteristics of spam
Spam is the mass sending of messages, often of an advertising or other nature, to persons who have not expressed a desire to receive it. The newsletter may contain offers of services, products, or links to phishing sites to collect user data. To protect email address owners from receiving spam, email services and providers use various methods of filtering and sorting incoming messages.
From a quantitative point of view, spam has low effectiveness. But mass mailings are inexpensive, and the result is worth the investment. To prevent unwanted emails from clogging your mailbox and causing leakage of important data, regular comprehensive measures to combat spam using technical means are necessary.
The main danger of lice
At first glance, it may seem that lice are low-danger parasitic insects that are unlikely to cause significant harm to humans. But in reality this is not entirely true. Due to their rapid reproduction, these insects can be the main carriers and distributors of such serious diseases as relapsing or typhus. The main factor in the rapid proliferation of lice is unsanitary conditions and lack of basic body hygiene.
But, despite the seriousness of the diseases that lice can carry, humanity has come up with a huge number of ways to get rid of lice.
Anti-spam methods
Some types of emails that are used in spam attacks:
- Letters from addresses that are unknown to the user.
- Mailings (the sender can be a well-known and reliable organization, for example, an airline or hosting).
- Letters with incentive messages (buy, help raise money for treatment, follow the link to receive your winnings, letters from Nigerian princesses asking for help with money).
The very concept of spam is personalized. If a mailbox user has subscribed to the newsletter and regularly receives emails with relevant content, this is not spam. When a user was not subscribed to the news, but one day was included in the newsletter due to a leak of his email address, this is spam.
There are a number of common methods of combating spam that even a person who is not related to the IT field can perform to limit mailings:
- Unsubscribe from a mailing list that you definitely did not subscribe to. This works if the unsubscribe link is configured correctly and leads to exactly where the user's address is removed from the spam listing. If the link leads to a blank page or is configured incorrectly, you will not be able to unsubscribe.
- Using an additional mailbox to register on unimportant resources, where for one-time access you need to create a password and link your account to your mail. This way, your primary email address is less likely to end up on spam lists. Anything unnecessary is sent to an additional address.
- Setting up sorting of incoming letters into specialized folders. When there are too many unwanted emails in your inbox, create special folders for important categories of emails, where spam will not end up. This way, it will be clear that the inbox contains mostly junk mail, and the necessary messages will not be lost from sight.
In the IT industry, spam trends are constantly changing. New options for bypassing existing filtration methods are emerging, and fresh antidotes are being developed for new methods. Below is a brief overview of the most effective and time-tested technologies for combating spam mailings.
Blacklists
The blacklist, or DNS-based Blackhole List, can be configured individually for each mailbox, or for a group of email addresses. Of all the methods used to combat spam, this is the most ancient. The lists consist of domains and IP addresses from which spam came.
Blacklists can be private or public. Private blacklists are created by users themselves when they restrict the receipt of emails from a specific sender. For large aggregators of spam mailings, private blacklists are not dangerous, unlike public ones. If an IP address is included in a public blacklist used by providers or mail services, mailing of letters is blocked not only from one address, but also from related domains from the list. Public blacklists can be open or closed, paid or free.
Blacklists are not the most effective way to combat spam. Although lists eliminate the possibility of receiving spam from a specific address, filtering is often triggered where it is not required. You can lose something important and necessary. This requires frequent updating of the list.
Fear and ways to deal with it
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Have you ever had a feeling that made your entire body shiver, start to sweat, and make you feel dizzy? I think everyone has had this, everyone has faced fear. But what is it and is it possible to fight it? Over time, people began to develop more and more different fears and phobias (pathological form of fear). And this problem became more and more urgent; they began to turn to religion, philosophy, physiology and psychology for its solution. Scientists were able to find out that the state of fear is caused by a real or imaginary threat to a person. Essentially, it is a biological fuse. When a person perceives a situation as dangerous, the body gives a signal. The mechanisms by which fears arise are of a standard nature, but the fears themselves are very individual. When a person is born, he is endowed with only two types of fear, genetically determined: the fear of falling and the fear of loud sounds. These fears give us the instinct of self-preservation. All other fears, whatever they may be, are an acquired consequence of life experience. That is, we can say that at birth we have two unconditioned reflexes, on the basis of which other (conditioned) reflexes are born. To put it bluntly, when you were little, you decided to pet a dog. And at that moment, when you did not expect it at all, she barked very loudly. This situation can provoke the emergence of a fear of dogs. Because unconditional fear (loud sound) was layered on what you were doing at that moment (petting the dog). And now dogs seem to you like some kind of dangerous factor. The benefits of fear and its mechanisms Psychologists in their research claim that the emotion of fear has a negative connotation. However, the benefits of fear cannot be completely denied. Its key function is to preserve life and protect people from threatening factors. We have all heard about the instinct of self-preservation. This instinct is innate, basic for humans. Its realization is facilitated by pain and fear. If something causes pain to our body, the body tries to eliminate it and avoid this factor in the future. Fear also forces you to look for ways out of an uncomfortable situation, as well as ways to simply avoid getting into it in the future. Women have a higher instinct of self-preservation than men, which is due to evolution. The same evolution gave our body an awareness of what could be dangerous for it, and this leads to the conclusion that fear is still useful. It is believed that when a person experiences fear, the following hormones are released: adrenaline and norepinephrine, the “rabbit hormone” and the “lion hormone.” In fact, the whole process of what and how happens in our brain under the influence of fear is much more complex. Quite a lot of serious scientific articles, as well as simply popular science materials on the Internet, are devoted to this issue. Let’s just look at how the above-mentioned hormones affect the body. Adrenalin. The release of adrenaline into the blood is necessary to trigger processes that contribute to adaptation to stress. Adrenaline affects our cardiovascular system, increasing blood pressure and dilating blood vessels. This improves brain nutrition, sharpens perception, speeds up information processing and facilitates the thinking process. We can say that this is a natural, natural replacement for a warm-up. When we warm up, we achieve the same effect, only consciously. This ensures the effect of mobilizing all available resources. Norepinephrine. You may have experienced a strange feeling of slight dizziness, combined with a surge of energy and even a feeling of anger and rage. It is believed that this is the effect of norepinephrine, the actual hormone of rage and anger. This is partly true, but not completely. Stress and fear cause the release of not only adrenaline into the blood (even though it is the main and most effective), but also a number of other hormones. Norepinephrine has a weaker and simpler effect on the body, and its action should be considered only in combination with adrenaline. And the ratio of these two hormones (and a number of other factors) ultimately determines whether the reaction to stress will be more aggressive or, on the contrary, cowardly. Norepinephrine further constricts blood vessels and increases blood pressure. But it has a much weaker effect on other body functions. For example, on breathing and heart rate. Norepinephrine takes part in ensuring the mechanism of wakefulness, forcing a person to be collected and active. Its higher concentration can actually cause a rather aggressive reaction to stress. The ratio of adrenaline and norepinephrine in the blood in response to stress is a physiologically predetermined value, and it is difficult to do anything about it, because we cannot consciously control the release of hormones. However, not everything is predetermined only by physiology. Fighting fear Of course, the simplest, but quite expensive way is to go to a psychotherapist who will help you understand the nature and causes of your fears and eliminate them. But it would be wrong to say that you cannot fight fears on your own. “Fear has big eyes,” says popular wisdom. If we think more carefully about this phrase, we can already see ways to combat fear. We often exaggerate the danger and traumatic nature of what we fear. Let's say we are afraid of heights. And even one meter above ground level seems terribly creepy to us: our knees are shaking, our heads are spinning, etc. Now let's try to think logically and objectively. What could happen to us if we fall (oh my God!) the whole one meter? Hmm... Maybe nothing? Or we are afraid of spiders, even the most common small spiders that are safe for humans. Let's think again. The spider is tiny, but for him we are huge, creepy creatures. So who should be afraid of whom? And also have pity on the spider, maybe he really is in a wild panic at the sight of you, so he rushes around to save his life when he meets the giant. So, from all these examples we can derive the first way - to evaluate the reality of your fear. The second way is positive thinking or just humor. Try to see the situation that scares you not from the negative side, but from the positive side. After all, maybe if you get bitten by a spider, you'll become a "superhero superman." There have already been precedents. Also try to approach your fear with humor. The greater the situation of uncertainty, the greater the fear. It is uncertainty and ignorance that often frightens us. When we run away from our fear, when we turn away from it, it grows, beginning to cause us inconvenience in completely ordinary matters. Humor and laughter are not only a good defensive reaction, but also a way to look at your fear and turn your face to it. Let's take for example the same fear of spiders. Wasn't it funny for you to read about this example in the previous paragraph? Imagine in colors what a spider thinks when he looks at you, how his whole life, wife, children flash before his eyes... Now look at yourself from the outside! Well, isn't this absurd! We all have fears of one kind or another, each of us has a hard time in some way, we have to overcome ourselves and do it through force when it’s incredibly scary. But this does not mean at all that you need to feed, groom and cherish your fears! The third way is to gradually get used to an object or situation that causes fear or panic. Are you afraid of a nuclear explosion (this is not a joke, this fear is called atomosophobia)? Look at pictures of a nuclear mushroom, draw it, study nuclear physics. And now, look, you can already admire the explosion live without a feeling of panic! But, seriously, this approach is called behavioral therapy. When a person is gradually led to directly interact with his fear. This type of therapy uses another way to combat fear – positive reinforcement. That is, a person is rewarded when he makes progress in the fight against fear. You can do the same yourself, gradually overcoming your fear. That is, returning to the example with atomosophobia: you love chocolates and are afraid of nuclear explosions. Were you able to force yourself to look at the picture with a nuclear mushroom? Eat some chocolate and reward yourself! These are very crude and exaggerated examples, but they show the essence of therapy. This way you can work with almost any fear. But this does not mean that this method needs to be isolated from others. A combination of methods always works better. There are some other ways to deal with fear, such as: - try to distract yourself from your fear: to another object, to a conversation, to something more important. - physical activity, sports. - visualization of fear - in the form of a drawing, for example. In conclusion, it is worth remembering that the worst way to deal with fears is to run away from them. By doing this, you will only achieve that your harmless fears will gradually develop into a pathology called a phobia. Don't be afraid of your fears (by the way, this is called phobophobia)! Turn your face to your fear, try it, look for ways that suit you, fight it, and you will definitely win! Sources: https://fb.ru/article/208311/kak-preodolet-strahi—rekomendatsii-psihologa https://www.factroom.ru/facts/11144 https://postnauka.ru/faq/41695 https:/ /strah-trevozhnost-fobiya.ru/0/gormon-adrenalin.php https://www.vitamarg.com/konsultacii/sostoynie/7765-8-variantov-borby-so-strakhom
Content filtering
The essence of this method is based on analysis of the content of the mailing list. If emails contain pieces of content typical of spam (certain words, snippets of text, images), then the sender's address is blacklisted along with related domains.
The advantage of content filtering is the ability to individually customize it to suit the needs of a specific user. The effectiveness of the method is very high, but it requires significant labor costs. Fine-tuning of filters is carried out by specialists, and even entire teams of antispam laboratory employees. An ordinary user cannot afford such a service; it is in demand primarily among corporate customers.
Of course, spammers try to bypass content filters: they change letters in words to symbols, photoshop pictures. But the difficulty of such content modification lies in the fact that the robot needs to be configured to send many messages, each of which is somewhat different from the others. In this case, the recipient of spam must perceive all modified messages equally, regardless of what exactly changes in them to pass moderation. To comply with all the conditions, you have to develop special software, which requires labor.
As a result, by applying content filtering, you become a more difficult target - and this makes it less likely that you will be selected as a target in the first place.
Fighting spam with technical means
Internet providers, email services and many other intermediaries between content consumers and senders use a variety of technical means to eliminate spam. For corporations, businesses and government agencies, the protection provided by default by the provider is not enough to provide the required level of security and convenience. The main task of a system administrator who sets up filters for one or a group of email addresses is to optimally filter out all that is unnecessary without losing the necessary emails. To do this, specialists use specialized software and apply their own developments. Protection methods constantly have to be constantly updated in order to keep up with the resourcefulness of spammers.
The effectiveness of protection depends not only on what anti-spam methods are used, but also on fine tuning of filtering. There are no universal solutions to this issue. The number of Internet users is constantly growing, and in the coming years the issue of spam mailings will be relevant. Legal methods for exterminating spam senders have not yet worked. Therefore, technical means remain the most reliable and effective in organizing spam blocking.
For example, the Traffic Inspector Next Generation universal security gateway uses a built-in anti-spam tool.
Types of lice in humans
Small insects that live and feed on human skin are called lice. So, what are the types of lice? Types of lice are divided into:
- Head;
- Clothes;
- Pubic.
Head lice live and parasitize on the human scalp. These parasitic insects feed on the blood of their host and can survive for more than 10 days without food. The life cycle of a louse is about 40-45 days. During this time, a sexually mature female manages to lay more than 200 larvae, which is why the rate of spread of pediculosis is very high. Each such louse larva hatches from the egg already on the 8-10th day and after a couple of weeks begins to lay eggs. The eggs are laid on the hair closer to the scalp and are held firmly there with the help of a special adhesive produced by lice. In most cases, lice bites are accompanied by severe itching of the skin. This occurs due to the fact that when biting the skin, the louse produces another special substance that prevents the rapid clotting of blood.
A louse is a small insect from the category of parasites, which has very modest dimensions from 3 to 6 mm, while the head of the insect is significantly larger than the size of its flat body.
Tech tools and employee awareness
In general, you can stop spam at two points: on the mail server and after receiving the letter. In the first case, the task is to prevent a spam email from entering the user's mailbox. In the second, it is necessary to correctly recognize a threat in an already received letter and issue a warning to the user that the message is dangerous.
There are dozens of different solutions on the market designed specifically for protection against spam mailings. Below we present some of them and briefly describe their functionality.
When choosing specific tools to combat spam, consider the real needs of your organization and remember that one of the important elements of protection is the awareness of your employees on how to identify a spam letter and what to do if it is already in the mailbox. A simple rule “do not click on suspicious links” can save millions of rubles and nerve cells. Maintaining a dialogue with colleagues, teaching them the basics of information security (part of which is the fight against spam) is extremely important.
How to use shampoos and other lice treatments
In most cases, it is recommended to apply this product to dry or slightly damp hair and carefully distribute it over the entire length. It is recommended to carry out the procedure in a room that can be easily ventilated, since any of these products are toxic and not safe for humans. When treating the head with an anti-pediculosis agent, it is recommended to cover the person’s shoulders with a napkin or towel. The product should be kept on the hair for the time clearly indicated by the manufacturer of the product. After this time, it is recommended to rinse your hair for a long time with running water, without using any other soapy substances.
Most often, a course of treatment for head lice with shampoo, lotion or spray is designed for at least three applications. It is in three times that you can achieve the destruction of all mature lice.
Types of weeds in the home garden
To start fighting weeds, you need to know what species they belong to.
Types of harmful plants often found in the garden:
- Dog grass (creeping wheatgrass). The powerful root system of wheatgrass can significantly deplete the soil. The long, straight leaves of the weed look like grass. It can grow quickly, occupying large areas of the garden. In folk medicine, dog grass is used as a remedy against cystitis, cough and liver diseases.
- Field bindweed. This climbing perennial grows mainly in sunny areas and can reach a height of 2 m. The shoots of bindweed can grow at a distance of up to 9 m. The leaves are arrow-shaped, and the flower looks like a gramophone. Bindweed is widely used in folk medicine.
- Purslane. This plant has found wide application in pharmaceuticals and medicine. However, in a garden bed, purslane is a weed that can occupy huge areas.
- Woodlice (chickweed). This herbaceous annual is not affected by sudden drops in temperature. If there is no control of woodlice in the early stages of its growth, it can quickly cover the ground with a green carpet.
- Common aeruginum (rubella). This weed is extremely picky: it can germinate in almost any soil, even dry conditions. Shchiritsa is extremely prolific: it can produce up to 500,000 seeds. Its ovoid leaves are used as a hemostatic and bactericidal agent.
- Ezhovnik (chicken millet). This grass can grow instantly during rainy weather. The length of shoots affecting areas with carrots and beets reaches 1.5 m,
- Dandelion. The habitat of this flower, familiar from childhood, is lawns and flower beds. Dandelion reproduces by transporting seeds by wind. The leaves of the plant are edible and have medicinal properties.
- Bluegrass. Despite the fact that this plant has an external resemblance to grass, it is quite difficult to get rid of it.
- Plantain. The young leaves of the plant can be eaten; it has antiseptic and wound-healing effects. It is extremely unpretentious to living conditions.
- Creeping buttercup. This weed is easy to recognize by its yellow flowers, and it grows mainly in damp areas where there is no sun.
Related article:
How to deal with horsetail in the garden?
Safety precautions when using anti-pediculosis drugs
During treatment, you should also carefully ensure that the drug does not come into contact with the mucous membranes of the eyes and nose, and also avoid getting the drug into the body. You can also learn how to get rid of lice using chemicals sold in pharmacies from the instructions that are necessarily attached to such drugs.
The use of various chemicals to combat lice also has its contraindications. For example, such drugs may be contraindicated for children, pregnant women and people suffering from various types of allergies. That is why each drug should be selected individually, taking into account its physiological characteristics.
Mechanical destruction of lice
As mentioned earlier, almost no chemical agent helps cope with lice larvae. Such products either have no harmful effect on nits at all, or they kill them, but at the same time they continue to hang on a person’s hair. This state of affairs not only does not look aesthetically pleasing, but it can also be misleading in how to determine whether these larvae are dead or not.
That is why the mechanical method of fighting lice, first of all, means a comb for lice and nits. Correct, and most importantly careful and painstaking use of such a comb will help to get rid of the problem of head lice extremely effectively.
The mechanical method of getting rid of lice involves regular inspection and combing of the head in order to detect and destroy both adult insects and their larvae.
A special comb that is used to comb out lice and nits can be purchased at the pharmacy. A characteristic difference between this comb and any other is the presence of a very small distance between the teeth of the comb. As a rule, this distance does not exceed 2 mm in order to comb insects from the head as efficiently as possible.
During the combing process, the comb can be periodically moistened in a light vinegar solution. This will help facilitate the process of peeling nits from the hair structure. After each combing, the entire instrument must be thoroughly washed, dried and treated with antiseptic agents.
The person who performs the combing procedure for a person suffering from head lice must take certain precautions. To do this, it is advisable to tuck your hair under a scarf or a disposable cap, not to lean too close to the head lice carrier and not to use the patient’s personal items. It is recommended to comb your head for lice and nits every day for at least a month.
Traditional methods of treating pediculosis
Since lice is a disease that was known to mankind a long time ago, it is quite logical that people were able to independently come up with and try many different ways to combat lice.
Treat with kerosene
One of the most common folk methods of fighting lice is the use of kerosene. It is recommended to treat the human head with a solution of kerosene mixed with vegetable oil (in a ratio of 1 to 10) and keep it on the hair for a long time (can be kept for up to 10-12 hours). The kerosene composition easily kills all insects and does not require reuse, and the oil nourishes and moisturizes irritated scalp. After using kerosene, you should use a combing procedure to finally get rid of larvae and insects.
Avoiding lice with salt and vinegar
To kill lice, you need to take about 50g of regular table salt and about one glass of wine vinegar. Mix all this thoroughly and also add 5 g of pure alcohol. This solution should be applied to a clean, washed hair. To use the solution, take a small piece of gauze and soak it in the solution. Apply this compress to the affected areas of the head. You can use this solution throughout the whole day, changing compress bandages at least twice a day. This method helps to effectively get rid of insects and slightly soothe the scalp, respectively, relieve a person from itching.
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Treating lice with the help of healing cranberries
This method does not require any special preparation. To prepare a remedy for lice, you need to take 200-300 g of cranberries, crush them thoroughly and mix with one teaspoon of natural honey. The resulting paste should be applied with massaging movements to the hair and scalp. Also, it should be noted that cranberry juice is good for removing all nits from human hair.
The most effective remedy for lice is to combine chemical and mechanical methods of control; by strictly following all the recommendations of these two methods, you can get rid of lice quite quickly and efficiently.