Twitter put on hold its recently launched $8 “blue checkmark” subscription service Friday after fake accounts inundated the site. Among the imposter accounts, a fake Eli Lilly account posted a tweet announcing they would make insulin free, causing the pharmaceutical company’s stock to take a plunge. Meanwhile, a fake Lockheed Martin account, @LockheedMartini, posted it would halt weapons sales to Saudi Arabia, Israel and the U.S., causing the real Lockheed Martin to lose its share value. Fake accounts for Tesla were also created.

In related news, Twitter started laying off a large number of its contract workers on Saturday, including those working on content moderation. One of Elon Musk’s first acts as Twitter’s new owner was to lay off around half the company’s permanent staff earlier this month.