YouTube has struggled with scammers taking over channels to spread cryptocurrency scams before.

The group is best known for targeting emails associated with former President Trump's re-election effort.

Several academics and journalists reported being targeted.

That's a dozen so far this year alone, as zero-days are having a record year everywhere.

The feature gives users a safer way to back up messages.

Companies also will offer cyber tools and training after a private sector cybersecurity summit at the White House.