One day after declaring war on ISIS members, Anonymous has already managed to take down over 3,800 Twitter accounts linked to various ISIS members and associates.

The hacktivism group quickly got its business together, created an official Twitter account for the whole #OpParis operation, and a new website where to centralize all ISIS accounts.

Besides scanning for ISIS Twitter accounts themselves, the hacking group has also opened access to the site to those interested. Anyone who comes across ISIS social media accounts can easily search the database and report any new terrorists and supporters.

The website is called #opIceISIS and will index ISIS members based on their real name, location, picture, Twitter, Facebook, and YouTube accounts.

Before the Paris attacks, Anonymous waged war on ISIS members after the Charlie Hebdo attacks, earlier this year, during operation #OpISIS. That time, the group managed to take down tens of thousands of accounts.

With over 3,800 just on the first day, the group seems more determined this time around to finally put an end to the terrorist group.

Just before the Paris attacks, the Ghost Security Group, another secret hacking posse, revealed that they traced Bitcoin wallets holding more than $3 million / €2.8 million back to known ISIS members.

With Anonymous’ most recent additions of known ISIS members to their database, law enforcement agencies and other hacking groups might be able to track down more accounts and hinder the terrorists' activities.

UPDATE: UK journalists are claiming to have seen some of the data collected by Anonymous activists. Also, after day #2 of the Anonymous-ISIS cyber-war, the hackers are claiming they have now taken down 5,500 pro-ISIS Twitter accounts.