Phishing attacks by fraudsters have shot up by more than 80% in six months, new figures from security firm Symantec have revealed.
Symantec said it had detected 157,477 unique phishing messages in the first six months of 2006, up 81% on the previous six months.
Symantec’s latest Internet Security Threat Report warned that widespread internet worms had given way to smaller, more targeted attacks focusing on fraud, data theft, and criminal activity.
Attackers were increasingly using evasive tactics to avoid detection, while attacks aimed at client-side applications was on the rise, the report warned.
The level of spam e-mails also increased in the first half of the year, rising from 50% of all monitored e-mail traffic to 54%.
Most spammers were now including links to websites hosting malicious code, rather than including the code directly in the spam mail to reduce the chances of it being blocked.
Symantec also identified more than 4.6 million active bot network computers, commonly used in denial-of-service attacks that threaten businesses. During the first half of 2006, the security firm recorded an average of 6,110 DoS attacks a day.
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