We use cookies to provide you with a better experience. If you continue to use this site, we'll assume you're happy with this. Alternatively, click here to find out how to manage these cookies

hide cookie message
80,259 News Articles

New Trojan horse uses your Mac to attack websites

Software security company ESET reports that hackers have successfully ported older Linux-targeting malware to Mac OS X. OSX/Tsnunami.A is a new variant of Linux/Tsunami, a malicious piece of software that commandeers your computer and uses its network connection to attack other websites.

Like its Linux-based predecessors, Tsunami works by communicating via Internet Relay Chat, or IRC. The malware listens to a hardcoded list of IRC channels on specific servers, and responds to specific commands entered by others in those chatrooms. When triggered, infected computers can be instructed to attack individual websites, by sending large numbers of simultaneous requests. This is known as a Distributed Denial of Service attack (or a live Apple event); the huge number of simultaneous requests to a single website can cause it to crash or go offline.

Even worse, ESET says that Tsunami can force your computer to download additional malware or other software. The company also says that its antivirus software, ESET Cybersecurity for Mac, can detect and remove the malware.

Sophos says that the malware is distributed via a Trojan horse—malicious software that masquerades as something more innocent. Stay safe by ensuring that you only install software from trusted sources.


IDG UK Sites

Black Friday 2014 tech deals UK Live: Best Black Friday deals from Apple, Amazon, Argos, eBay,...

IDG UK Sites

Black Friday feeding frenzy infects the UK

IDG UK Sites

VAT MOSS: Will I be affected by the EU VAT changes? Here are the facts for designers and artists

IDG UK Sites

Black Friday 2014 UK: Apple deals, Amazon deals & Black Friday tech offers