Turkish hackers have attacked numerous Twitter accounts belonging to Amnesty International, UNICEF USA and security blogger Graham Cluley, among others, using them to tweet messages in Turkish accusing Germany and Holland of being Nazi regimes.
The attacks are almost certainly connected to the barring of the Turkish foreign minister Mevlut Cavusoglu from flying to Holland, and the prevention of Turkey's family minister, Fatma Betul Sayan Kaya, from speaking to Turkish supporters of President Recep Tayyip Erdogan at a rally in the Rotterdam.
After his ministers were barred, Erdogan cut diplomatic ties with the Dutch government and promised retaliation, branding Holland a "Nazi remnant".
A week before, he had accused the German government of "Nazi practices" over it's banning of rallies in the country, which are intended to show support for his increasingly authoritarian government.
Indeed, Erdogan's government has arrested thousands of academics and opposition party supporters, as well as imposing bans on the use of VPNs, Tor, Twitter, Facebook and YouTube.
The hacked Twitter accounts were used to broadcast messages in Turkish with the hashtags #Nazialmanya and #Nazihollanda. The attackers seem to have taken a scattergun approach to their targets as most have no obvious relation to the incidents. They included the UK Department of Health and BBC North America, as well as the official account of Marcelo Claure, CEO of telecoms firm Sprint Corp.
Cluley believes the attack vector used was a third-party app called Twitter Counter
"Twitter Counter requests read *and* write access to your Twitter account, in order to do its jiggery pokery counting your Twitter followers," he wrote on his blog.
"I gave Twitter Counter access to my account in October 2014, and that clearly was a decision I now regret. Quite why it would need write access, unless it is planning its own self-promotion, I can't say.
"The fact that a third-party app was used means that the hackers didn't have my Twitter password. Phew! It also meant, however, that they didn't have to try to bypass Twitter's Login Verification feature in order to tweet from mine and thousands of other Twitter users' accounts."
If you have been affected, Cluley suggests deleting the offending tweets and revoking the app's access to your Twitter account.
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