Modern systems and security software have evolved to identify these "bombs" before they are opened:

: Many email providers scan attachments in isolated environments (sandboxes) to check for such resource-heavy files before they reach your inbox. Part-66 - EASA - European Union

: Most security software now flags zip files with unusually high compression ratios as suspicious.

Fills the hard drive completely, causing applications to crash or the OS to fail.

Rapidly uses all available RAM, leading to a system-wide "Blue Screen of Death" (BSOD). Protective Measures