Ransomware: RBI asks banks to follow CERT-In instructions on WannaCry attack

Ransomware: RBI asks banks to follow CERT-In instructions on WannaCry attack

The attack is unique, according to Wainwright, because it combines ransomware with a worm function, meaning once one machine is infected, the entire internal network is scanned and other vulnerable machines are infected. This ransomware is called "WannaCry".

"That is a huge concern right now", said Darien Huss, a senior security research engineer at Proofpoint who was among the researchers who helped disable the virus, called "WannaCry", told ABC News today. Microsoft references the WannaCry ransomware's source as a vulnerability previously known by the NSA, noting that similar security holes were disclosed on WikiLeaks in documents stolen from the Central Intelligence Agency.

The tool used by the cyber-criminals, apparently stolen from the North American National Security Agency, was already freely published on Internet by the hackers team Shadow Brokers as a way of "protest" about US President Donald Trump.

Interestingly, the company had rolled out updates to "Patch the Ransomware Vulnerability" for Windows 7, 8.1, Vista SP2 and Windows 10 earlier this year on March 14, but only released "Security Update KB401258" to address the issue for less-popular Windows Server editions, including Windows 8, Vista, XP platforms on Friday.

He added that the Cyber Swachhta Kendra - government's portal on information about cyber security - is being updated on regular basis since Saturday. The tools behind the cyber attack allegedly belonged to the US National Security Agency.

There were fears of a big cyberattack unfolding when offices opened on Monday after the weekend and the government agencies, Reserve Bank of India and Securities and Exchange Board of India were on a vigil against the virus which has wrecked havoc across 150 countries.

Download anti-virus software, update it often and run it regularly. The WannaCry software infected computers operating on Microsoft and displayed messages demanding users to pay $300 in bitcoin - type of digital currency widely used online.

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The damage might have been temporarily contained.

Unfortunately, the spread of WannaCry wasn't actually stopped, but instead slowed. More recently, it appears that the Maharashtra government has also set up a cyber security helpline to handle queries related to the infection. But attackers can, and probably will, simply develop a variant to bypass this countermeasure. "It can be tough to tell which patch is important, until it is too late".

"Whenever there is a new patch, there is a risk in applying the patch and a risk in not applying the patch", Grobman said.

India is on high alert, monitoring critical networks across sectors like banking, telecom, power and aviation to ensure that systems are protected against the attack that has claimed victims in more than 150 countries over the weekend.

"We can certainly expect follow-on attacks".

Computers around the globe were hacked beginning on Friday using a security flaw in Microsoft's Windows XP operating system, an older version that was no longer given mainstream tech support by the United States giant. The attack on Britain's NHS was potentially the most devastating as thousands of patients' appointments were cancelled, ambulances rerouted, records lost and chaos followed, despite the warnings delivered, some as recently as past year, on the vulnerability of outdated systems. "Because they could have done something ages ago to get this problem fixed, and they didn't do it".