San Francisco, Aug 31: Twitter said Friday the account of chief executive Jack Dorsey had been "compromised" after a series of erratic and offensive messages were posted.
The tweets containing racial slurs and suggestions about a bomb showed up around 2000 GMT on the @jack account of the founder of the short messaging service before being deleted.
Some of the tweets contained the hashtag #ChucklingSquad which was believed to indicate the identity of the hacker group.
The messages contained racial epithets, and included a retweet of a message supporting Nazi Germany.
"We're aware that @jack was compromised and investigating what happened," a Twitter spokesperson said.
A barrage of comments fired off on the platform questioned why the Twitter co-founder didn't secure his account with two-factor authentication, and how disturbing a sign it was that the service wasn't to keep its own chief safe on the platform.
"If you can't protect Jack, you can't protect... jack," one Twitter user quipped.
The news comes with Dorsey and Twitter moving aggressively to clean up offensive and inappropriate content as part of a focus on "safety." "This might be the only way to get rid of racist tweets on this platform," a Twitter user commented.
Twitter recently announced they would meet with Manchester United representatives regarding calls for more to be done in preventing racist abuse of footballers on social media platforms.
British-based security consultant Graham Cluley said the incident highlighted the importance of two-factor authentication, where a user must confirm the account via an external service.
"Everyone should ensure they have 2FA enabled, use unique password, and double check what apps they've linked to their accounts," Cluley tweeted.
"Hard to say at moment how he was compromised, but one of those reasons most likely."
Cybersecurity researcher Kevin Beaumont said the account appeared to have been hijacked "via a third party called Cloudhopper, which Twitter acquired about 10 years ago and had access to his account." Cloudhopper enables users to send tweets on their phones via SMS.
The incident raised fresh concerns about how social media users -- even prominent ones -- can have their accounts compromised and used for misinformation, a point highlighted by Canadian member of parliament Michelle Rempel Garner.
"Between bots, trolls and abuse, I've been skeptical about @Twitter as a viable platform for some time now," Rempel Garner wrote.
"But the fact it took the platform's owner (@jack) about 30 min to get his hacked account under control is deeply problematic, and makes me worry as an elected official."
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New Delhi (PTI): Approximately 13 lakh litres of packaged drinking water -- 'Rail Neer' -- are being supplied to train passengers across the railway network daily, the government informed the Lok Sabha in a written reply on Wednesday.
Apprising the Lower House about the Indian Railways' endeavour to provide safe and potable drinking water facilities at all stations, the government also provided zone-wise details of the water vending machines (WVMs) installed there.
"To ensure the quality of drinking water being made available at the railway stations, instructions exist for periodical checking and required corrective action to be taken.
"Regular inspection and maintenance of drinking water facilities is carried out and complaints are attended to promptly," Railway Minister Ashwini Vaishnaw said while responding to a question raised by BJP MP Anup Sanjay Dhotre seeking to know the supply of drinking water at railway stations across the country
"Complaints regarding deficiency in services, including water supply, are received through various channels such as public complaints, web portals, social media, etc. These complaints are received at various levels, including the Railway Board, zonal railways, division office, etc.," Vaishnaw said.
"The complaints so received are forwarded to the concerned wings of Railways and necessary action is taken to check and address them. As receipt of such complaints and action taken thereon is a continuous and dynamic process, a centralised compendium of these is not maintained," he added.
Providing zone-wise details of water vending machines, the minister said 954 such machines have been installed across railway stations.
"The Indian Railways also provides safe and affordable packaged drinking water bottles -- Rail Neer -- approved by the Bureau of Indian Standards (BIS) in trains and at stations," Vaishnaw said.
"Approximately, 13 lakh litres of Rail Neer are being supplied per day to the travelling passengers in trains and at stations across the Indian Railways network," he added.