The Twitter logo is reflected on a pillar in the New York Stock Exchange. A CPJ poll of the site's users found many did not know how to secure their accounts. (AP/Richard Drew, File)
The Twitter logo is reflected on a pillar in the New York Stock Exchange. A CPJ poll of the site's users found many did not know how to secure their accounts. (AP/Richard Drew, File)

‘What’s two-factor?’ How journalists can protect themselves from Twitter hacks