Hi @amirul you have a great post. Cyber attack today not only attacking computer but we have to care our mobile phone too. The most dangers is caused by our unknown which one safe access and which one not. Anti virus is not best protection, because virus today always up todate then anti virus. Do you remember when Rasomware atack? That a proof anti virus only detected known virus. So how virus can run on our system, until today the most virus attacked is Microsoft Windows Operating Syatem. So, for me, I choice Linux as my Computer OS for more safety.