This week we look at the cyber attack that started last week, how many machines are infected, how does it work and what we can do to prevent it.
It is said that over 40,000 machines have been infected by the second variation of the malware despite the best effort of the Cyber security companies. The original attack started spreading worldwide on Friday. In more than 150 countries it has infected 300,000 computers. In the UK virus hit the NHS and has been discovered as new version of WannaCry, in France carmaker Renault closed its largest factory to prevent the spread of a global cyber attack.
So what is WannaCry? This is a ransomware – malicious software used by hackers to block access to a computer system until a ransom is paid.
How do we know we have been attacked? All you data will be locked on your computer system and you will be left with two files, one of them the Instructions on what to do and Wanna Decryptor program. You will be warned that all files will be deleted within days if you do not pay up using bitcoin. Bitcoin is a type of digital currency in which encryption techniques are used to regulate the generation of units of currency and verify the transfer of funds operation independently of a central bank. Bitcoins can be used for online transactions between individuals. Bitcoin is known as the world’s biggest virtual currency.
What is the advice from security experts what to do if attack happens to us?
Security Experts and the National Crime Agency say not to pay the ransom and to report it to Action Fraud. It is not confirmed if any victim who paid received their files. Check Point said not a single case has been reported of anyone receiving their files back after paying the ransom.
What operating systems are affected? It’s has been confirmed that Windows operating systems have been affected with WannaCry.
What can we do to stay safe? Windows guideline to stay safe is:
On the Microsoft forum you can also find step by step guide who to make sure your computer is fully protected.