New Cyber Chaos Appears To Have Been Avoided: Europol

Microsoft re-releases security update after cyberattacks

Microsoft re-releases security update after cyberattacks

Affected bodies included a social security department in the city of Changsha, the exit-entry bureau in Dalian, a housing fund in Zhuhai and an industry watchdog in Xuzhou.

What is the scale of the attack?

Friday's attack was the latest in the growing menace of ransomware in which hackers deliver files to computers that automatically encrypt their data, making it unusable until a ransom is paid.

At current standing more than 200,000 computers across 150 countries have been attacked, with Russian Federation and Britain among the worst hit.

Make sure that your antivirus software's database is updated and it's protecting your system in real-time and run a scan.

Shares in firms that provide cyber security services rose with the prospect that companies and governments would have to spend more money on defenses.

Mr Hunt has come under fire for failing to appear in public since the attack, which hit 47 trusts in England and 13 Scottish health boards.

The malware has not proved hugely profitable for its owners so far.

The ransomware, called WannaCry, locks down files on an infected computer and asks the computer's administrator to pay in order to regain control of them.

John Clark, professor of computer and information security at the University of Sheffield, said the attack should act as a wake-up call for the health service and for businesses and individuals to defend themselves adequately against so-called "ransomware".

Is my computer at risk?

"If a system supports some kind of critical processes those systems typically are very hard to patch". Experts are urging all organizations to update their software.

An NHS IT worker told the Guardian that users experienced a "bitcoin virus pop-up", demanding payment before they could access their PCs. "Because this would be nowhere near the worldwide spread and depth of attack if people had run the updates that Microsoft had provided in March", The Australian has quoted her as saying. MacGibbon said it was still not known how the virus had originated and then spread, although it was likely the transmission included email.

Unlike many other malicious programs, this one has the ability to move around a network by itself.

Although there is no evidence that patient data was compromised, British Home Secretary Amber Rudd told the BBC that NHS must learn from the attack and upgrade its IT systems.

In March, Microsoft issued a free patch for the weakness that has been exploited by the ransomware.

That raises questions about inequality in technology, said Stewart Baker, a former general counsel at the National Security Agency.

When details of the bug were leaked, many security researchers predicted it would lead to the creation of self-starting ransomware worms.

The recent "WannaCry" attack was made possible by a flaw in the 15-year-old Windows XP operating system.

At Indonesia's biggest cancer hospital, Dharmais Hospital in Jakarta, around 100-200 people packed waiting rooms after the institution was hit by cyber attacks affecting scores of computers.

It's still unclear who is responsible for the attack and speculations have pointed towards Shadow Brokers - who are also responsible for releasing the malware online - or multiple hacking organisations. Such attacks are neither new nor particularly sophisticated.

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