Do the following sentences say the same thing?

Security experts are warning that a new mass-mailing worm is spreading widely across the Internet, sometimes posing as e-mail from the Microsoft founder.
A new worm has been spreading rapidly across the Internet, sometimes pretending to be an e-mail from Microsoft Chairman Bill Gates, antivirus vendors said Monday.

Return your answer on a scale from 0 to 5, where 0 is "not similar" and 5 is "very similar".
5