The hacker cell of the Anonymous collective has followed up its previous assault in Finland, disabling the websites and publishing the members' names of several German neo-Nazi groups.

News of the new attack broke on Monday when the collective posted the names of several hundred subscribers to a number of online stores selling clothing associated with far-right groups and writers for the Junge Freiheit newspaper - a publication with right wing leanings - on the web portal.

As well as the list, Frankfurter Rundschau reported that Anonymous hackers had also claimed responsibility for cyber-attacks on 15 sites believed to be associated with the neo-Nazi National Democratic Party (NPD), crediting the assault as a part of "Operation Blitzkrieg."

The collective later publicly acknowledge the campaign tweeting statements supporting the attack and linking to articles about it. "#Anonymous declares 'Blitzkrieg' on neo-Nazis ... #WeInSpankinNaziGirlsBusiness," read the AnonymousIRC Twitter feed's post.

Though unconfirmed, the German Altermedia site was listed as being down just after news of the attack broke. Altermedia is a forum site which offers vocal support and an online meeting point for several far-right groups, including the British National Party.

The attack follows a similar campaign enacted by the Finnish branch of Anonymous late in 2011. The Finnish cell of the Anonymous hacktivist collective issued a similar statement claiming responsibility for "exposing" a parliamentary aid's affiliation to an active neo-Nazi group at the start of November 2011.

The attack targeted the neo-Nazi Kansallinen Vastarinta website, with a data post on the Pastebin website following soon after. Ulla Pyysalo, a former aid to the True Finns MP Juho Eerola was reported as announcing her intention to resign from her post after her name appeared on Anonymous' list.

The attack follows Anonymous' previous promise that it will not tolerate far-right groups that actively discriminate against others based on race, sex or religion.

"We have no tolerance for any group based on racial, sexual and religion discrimination as well as for all the people belonging to them and sharing their ideologies, which is the reason why we decided to carry out last Monday's attack," read one previous Anonymous statement.

A full chronicle of Anonymous' previous activities can be found at the International Business Times UK's, "2011 The Year of the Hacktivist: When Anonymous Finally Grew-Up," summary.