Windows XP Has Twice the Infections of Windows 7

Microsoft released the latest edition of its Security Intelligence Report (SIR), which covers malware trends for the first half of this year.

According to the statistics released, Windows XP computers showed nearly twice the infection rate of Windows 7 systems. Of every 1,000 computers scanned, 9.5 XP computers with SP3 revealed a malware infection, while the number dropped to 4.9 and 5.1 for Vista (32-bit, 64-bit), 5.3 and 4.3 for Windows 7 RTM, and 4.9 and 3.1 for Windows 7 SP1. The data also revealed an increased infection rate for Windows XP and Windows 7, Windows Vista with SP2 is declining and actually shows lower infection rates than Windows 7.

According to the latest SIR, the most common malware on Windows computers was the worm Win32/Autorun with a share of 11.3 percent in the first half of the year, followed by JS/Pornpo Adware (8.0 percent), Win32/Obfuscator (7.3 percent), the Balcole exploit (6.2 percent), and the Win32/Dorkbot Worm (6.3 percent).

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