Twitter will require certain political candidates, elected officials and journalists to beef up their passwords, the company said Thursday, in an effort to head off any more breaches of high-profile accounts as the 2020 election draws near. From a report: The change comes two months after an embarrassing cyberattack in which hackers exploited Twitter employees’ credentials to wrest control of dozens of accounts, including those of former President Barack Obama, Democratic presidential nominee Joe Biden and Microsoft founder Bill Gates. The steps announced Thursday would not have prevented that hack but could foil less sophisticated exploits. Accounts deemed to have weak passwords will be compelled to make them stronger, and those users must now verify their phone number or email address before making password changes. The social media company will also encourage, but not force, high-profile users to implement two-factor authentication, a security measure that requires them to input a unique code in addition to their password.