FIREWALL

Computer security system designed to prevent attacks by crackers (8)

Solution has appeared in 2 crosswords (0 across and 2 down):

• Quick crossword No 16,535 — 2023-05-04 23:00:05
  11D: Computer security system (8)
• Quick crossword No 15,942 — 2021-06-10 23:00:02
  12D: Computer security system designed to prevent attacks by crackers (8)