People, culture & awareness
Fake emails or messages sent in bulk to trick people into handing over information or clicking something harmful.
Formal
A form of social engineering in which messages pretending to come from a trusted sender are sent to many people, aiming to capture a password or other credential, or to get the reader to open a harmful file or link.
In plain English
Like casting a net with bait into the sea - the sender does not care which fish bites, only that some do.
In practice
Hundreds of employees in a region receive a mail “from MitID” saying their login is about to expire; a few follow the link to a copy of the login page and type in their details.
Why it matters
It is cheap to send and needs only one person to fall for it, which makes it one of the most common first steps in an attack.