Slapper Teaches Users Value of Safe Hex, Says Sophos Anti-Virus
Posted on 16 September 2002.
Sophos, a world leader in corporate anti-virus protection, is urging Unix users to tighten up their safe computing procedures in order to curb the spread of the new Slapper worm (Linux/Slapper-A). This worm is currently spreading across the internet via unpatched vulnerablilities in Apache web servers.

Sophos produced specific protection against the Slapper worm at 09:17 GMT on Saturday, but is reminding Apache web server users that a patch for the vulnerability has been available since July 2002 from

"Unix is becoming more and more popular, with Apache beating Microsoft IIS as the web server of choice for many companies," said Graham Cluley, senior technology consultant at Sophos. "However, this popularity attracts attention from the cybercrime community, so fans of Unix need to remember to take security seriously. Instead of waiting for the next threat to emerge, they should get into the habit of patching susceptible systems as soon as a fix becomes available. Pre-emptive safe computing measures like this would have stopped Slapper in its tracks."

Sophos's safe computing guidelines are available free of charge from:

Further details regarding the Slapper worm can be found at

Graham Cluley is available to comment on + 44 (0)7990 552181 or + 44 (0)1235 544114


eBook: Cybersecurity for Dummies

Posted on 16 December 2014.  |  APTs have changed the world of enterprise security and how networks and organizations are attacked. These threats, and the cybercriminals behind them, are experts at remaining hidden from traditional security while exhibiting an intelligence, resiliency, and patience that has never been seen before.

Weekly newsletter

Reading our newsletter every Monday will keep you up-to-date with security news.

Daily digest

Receive a daily digest of the latest security news.

Thu, Dec 18th