![]() If a computer freezes or crashes frequently, this may be also related to a malware activity. Numerous advertisement windows popping up while visiting web-sites may signal that an adware in present in the system. In a firewall is configured in the system, attempts by unknown applications to establish Internet connections may be indicative of an infection. at night), but the web traffic continues, this could mean that somebody or someone else is active on the system, and most probably that is a malicious activity. ![]() If no users are working in the Internet in a specific time period (e.g. Symptoms of infectionĪn increase in the outgoing web traffic is the general indication of an infection this applies to both individual computers and corporate networks. So, the fact of infection can be detected by indirect evidence only. However, a Trojan typically installs itself secretly in the system, often employs special disguising methods and also covertly does its activity. By way of exception, some Trojans do inform the user directly that their computer has been infected – they may encrypt the user’s personal files so as to demand a ransom for the decryption utility. Many worms and Trojans typically do not reveal their presence in any way. However, users on their own are typically unable to detect that their computer got infected unless aided by antivirus solutions. If your computer does get infected, you need to determine the fact of infection, identify the infected file and send it to the vendor whose product missed the malicious program and failed to protect your computer. Sadly but true: no antivirus protection software gives you a 100% guarantee of complete security. Unfortunately, it may happen occasionally that the antivirus installed in your computer with its latest updates is incapable of detecting a new virus, worm or a Trojan. KasperskyPremium Support and Professional Services.KasperskyEndpoint Security for Business Advanced. ![]()
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