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Cyber ??attacks during the second half of 2011 have become more sophisticated and focused on business organizations, critical infrastructure of various countries, as well as military government agencies.

According to HelpNetSecurity, M86 Security specialists have analyzed cyberthreats faced by users in the second half of 2011. In particular, attracted the attention of scientists and spam activity of malicious programs, including the recent use of sets of exploits, fake digital certificates, as well as fraudulent schemes aimed at users of social networks.

M86 Security Specialists have recorded the largest number of malicious content in the U.S. (49.2%), Russia (6.0%) and Germany (5.9%).

According to experts of the company, although the spam activity, and decreased in the second half of 2011, but the level of malicious spam has increased to 5%, compared to 1% in the first half of last year. Attackers are increasingly inserted into emails malicious links, while avoiding the use of malicious files attached.

Experts say that cyber attacks in the second half of 2011 have become more sophisticated and targeted to commercial organizations, critical infrastructure of various countries, as well as military government agencies. In 2011, the attackers carried out the attack on organizations such as RSA, Lockheed Martin, Asia-Pacific Economic Cooperation, as well as a Dutch center of the issuance of digital certificates DigiNotar. As a result of the latest hacker attack on the organization, the fraudsters managed to give about a hundred fake digital certificates for a variety of domains, including Google, Yahoo, Facebook, British MI6 and Israeli Mossad.

Stolen and forged certificates have become an important part of successful cyber attacks as well as with their help, scammers can distribute malware and sign the certificate of well known companies.

According to M86 Security, the most commonly used set of exploits in 2011 was BlackHole exploit Kit. Its creators have accelerated the frequency of updates to this set of exploits and adding new mechanisms to bypass the detection.

Experts also pay attention to the practice of spammers use fake notifications in social networks, to trick users to pass on infected links. Thus, in the second half of 2011 social network Facebook has become the medium of spam and malware.