The Syrian Electronic Army (SEA) has added to its already long list of victims, with hacks on the Twitter accounts of the New York Post and SocialFlow.
As part of its attack on the New York Post, the hacking collective posted "Syrian Electronic Army was here" from the news site's Twitter feed.
The SEA also claims to have also infiltrated four other New York Post social media accounts, including its Facebook page and the Twitter pages of several journalists.
The accounts have now been restored to their regular states.
The New York Post has not yet commented on the hacks, but SocialFlow has been quick to issue explanatory tweets.
"Today an employee's email account was compromised in a phishing attack. As a result, our Twitter and FB accounts were compromised," the social media optimisation firm said.
"No customer access or data was compromised in this attack. As part of our security controls, we immediately took our service offline."
The SEA, was not content with letting matters die down, tweeting back "Advice: Don't lie on your customers, Your main website and blog was hacked too."
It remains unclear whether the SEA's claim has any truth behind it.
The SEA, which is loyal to Syrian President Bashar-al-Assad, became notorious this year, successfully executing hacks on the accounts of a number of high-profile organisations, as well as posing a huge problem to Twitter.