What is webstery.in
Webstery.in domain page message can be seen on common browsers like Firefox, IE , Chrome. Its pop-up can't be closed easily, which makes users believe its description: The computer is suffering threats and calling 1-855-845-9039 is necessary.
Don't get cheated. This is a malicious ad. It pretends to be a normal virus warnings message to mislead users to call the given number. Victims who call the line will be recommended removal tools or tech support service. Of course, they are required to pay for them.
You should not pay for non-existed threat. Use a reliable scanner to know the real security condition of your computer. Webstery.in pop-up comes because your browsers' setting are modified by some malicious codes. They are probably from the hacked pages or malware and trojans in your computer. Either way, you should remove this pop-up in time to prevent possible risks.