*Entry Title: *WHID 2011-70: US Postal Service Website Hit With 'Blackhole' Exploit *WHID ID: *2011-70 *Date Occurred: *April 8, 2011 *Attack Method: *Unknown *Application Weakness: *Improper Output Handling *Outcome: *Planting of Malware *Attacked Entity Field: *Retail *Attacked Entity Geography: * *Incident Description: *The US Postal Service website received an unwelcome delivery this week of a new attack rapidly spreading among legitimate websites. USPS became the latest victim of the so-called "Blackhole" toolkit, a wildly popular website attack kit that's easy to use and provides obfuscation features that help it evade antivirus detection. *Mass Attack: *No *Reference: * http://www.darkreading.com/advanced-threats/167901091/security/attacks-breaches/229401258/us-postal-service-website-hit-with-blackhole-exploit.html *Attack Source Geography:*