Alert researcher helps stem cyberattack

LONDON:

The cyberattack that spread malicious software around the world, shutting down networks at hospitals, banks and government agencies, was thwarted by a young British researcher and an inexpensive domain registration, with help from another 20-something security engineer in the United States.

Britain’s National Cyber Security Centre and others were hailing the cybersecurity researcher, a 22-yearold identified online only as MalwareTech, who – unintentionally at first – discovered a so-called “kill switch” that halted the unprecedented outbreak.

By then the “ransomware” attack had crippled Britain’s hospital network and computer systems in several countries in an effort to extort money from computer users.

But the researcher’s actions may have saved companies and governments millions of dollars and slowed the outbreak before computers in the United States were more widely affected.

MalwareTech is part of a large global cybersecurity community, working independently or for security companies, who are constantly watching for attacks and working together to stop or prevent them, often sharing information via Twitter.

It’s not uncommon for them to use aliases, either to protect themselves from retaliatory attacks or for privacy.

In a blog post on Saturday, MalwareTech explained he returned from lunch with a friend on Friday and learned that networks across Britain’s health system had been hit by ransomware, tipping him off that “this was something big”.

He began analysing a sample of the malicious software and noticed its code included a hidden web address that wasn’t registered.

He said he “promptly” registered the domain, something he regularly does to try to discover ways to track or stop malicious software.

Across an ocean, Darien Huss, a 28-year-old research engineer for the cybersecurity firm Proofpoint, was doing his own analysis.

The western Michigan resident said he noticed the authors of the malware had left in a feature known as a kill switch.

Huss took a screen shot of his discovery and shared it on Twitter.

Soon he and MalwareTech were communicating about what they’d found: That registering the domain name and redirecting the attacks to MalwareTech’s server had activated the kill switch, halting the ransomware’s infections.

Huss and others were calling MalwareTech a hero on Saturday, with Huss adding that the global cybersecurity community was working “as a team” to stop the infections from spreading.

“I think the security industry as a whole should be considered heroes,” he said.

But he also said he’s concerned the authors of the malware could re-release it without a kill switch or with a better one, or that copycats could mimic the attack.

“I think it is concerning that we could definitely see a similar attack occur, maybe in the next 24 to 48 hours or maybe in the next week or two,” Huss said. “It could be very possible.”

Who perpetrated this wave of attacks remains unknown. Kaspersky Lab and Avast said they identified the malicious software in more than 70 countries. — AP

I think it is concerning that we could definitely see a similar attack occur, maybe in the next 24 to 48 hours or maybe in the next week or two.

Darien Huss