Twitter says it has suspended 360,000 accounts since mid-2015 for violating its policies banning the promotion of terrorism and violent extremism.

The San Francisco-based company says it has also made progress in preventing users who were suspended from immediately returning to the platform using different accounts, which has been a problem in the past.

Twitter says its rate of daily suspensions is up 80 percent since last year, though it did not provide specific numbers. It says the suspensions spike immediately following terrorist attacks.

The report on its efforts come after Twitter has been criticized for not doing enough to keep extremist groups like Islamic State from using the short-messaging service to crowdsource supporters and potential attackers.