Malware

Within a few hours of being released in the winter of 2003, SQL Slammer had brought the internet to something of a standstill. We look back at this notable worm.

18 years of Googling is certainly something to behold, but on this anniversary, ESET's Ondrej Kubovič is keen to highlight the cybersecurity threat.

ESET researchers have spotted fake patch apps for Android – probably the first ever malicious mobile apps masquerading as a patch for a recently discovered vulnerability.

The trojan downloader Nemucod is back with a new campaign. However, it has changed the payload served to its victims – ransomware is not its go-to malware.

In 1999, David L. Smith launched the Melissa virus. Within a few hours, it had infected thousands of computers. We take a look back at its impact.

During the first half of this year, ESET has observed an increase in the number of detections of Nymaim, a long-known malware family whose prevalence has fallen markedly since 2014.

Fast food giant Wendy's says that it now believes that more than 1000 of its restaurants across the United States have fallen victim to a hacking gang, who used malware to steal customers' credit and debit card information.

An interesting DNS hijack that sets the victim's computer to use specific DNS servers has emerged. Here are the key details of this intriguing threat.

In contrast to the Eurovision contestants, malware writers try to make their creations as stealthy as possible. But thanks to unique behavior and sometimes even unintended showmanship of their malicious code, they end up in the limelight.