Computer Virus Statistics
Statistic Verification
Source: Microsoft Security Intelligence Report,
Panda Security, Consumer Reports
Date Verified: 7.11.2012
Computer Virus Statistics Data
Number of US households that experience heavy spam 24 million
Number of households that have had serious virus problems in the past 2 years 16 million
Number of households that have had spyware problems in the past 6 months 8 million
Number of households that lost money or had accounts misused by phishing 1 million
Estimated cost to US households for viruses, spyware and phishing $4.55 billion
Percent of all US households that have been affected by viruses 40 %
Most widespread virus to date by number of infections – “Conficker Virus” 8,976,038
Threats by Type
Viruses 57 %
Misc. Trojans 21 %
Trojan downloaders and droppers 7 %
Misc potentially unwanted software 4 %
Adware 3 %
Exploits 3 %
Worms 2 %
Password stealers and monitoring tools 2 %
Backdoors 1 %
Spyware 0.01 %

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