The DDoS attacks were at first carried out with the Gigaloader and JMeter applications. Within a few days, these were supplanted by the Low Orbit Ion Cannon (LOIC), a network stress-testing application allowing users to flood a server with TCP or UDP packets. The LOIC soon became a signature weapon in the Anonymous arsenal; however, it would also lead to a number of arrests of less experienced Anons who failed to conceal their IP addresses .  Some operators in Anonymous IRC channels incorrectly told or lied to new volunteers that using the LOIC carried no legal risk.  
The Phone Number I was given to contact (I am in the UK) was 0208 0683410 when I received an alert message informing me my computer had been compromised. It informed me to contact the number given immediately and not to try and close down the computer otherwise they would have to delete my account (or something similar). When I tried to close my web page it message kept popping back up and would not let the computer close, so I closed took the battery out to close it. I then re-opened and logged in with no problem and ran Windows Defender full scan and it detected this virus which I then deleted. I then checked it out in Defender and now send my reply to what I experienced.