One of the specific requirement of keeping yourself safe online is to avoid any suspicious links.
Clicking on malicious links is a sure shot invitation to worms, malware, trojans etc.
Traditionally, ransomware infections occurred when the victim clicked on a infected link that arrived through an email.
Security researchers from Cisco Systems first noticed the unusual strain of virus-like hacker software that exploits computer server vulnerabilities.
Over last year, ransomware has quickly become the number one enemy of security researchers and authorities.
source: www.techworm.net