A virtual card is a card number created in software for online purchases or tightly controlled spending. It works like a normal payment card, but it may exist only in an app or dashboard, with its own number, expiry date, limits, and merchant rules. Businesses use virtual cards to separate subscription spend, project budgets, and employee expenses, and to replace a card quickly if it is compromised.
In cybersecurity, virtual cards matter because they reduce exposure of the primary account and make misuse easier to contain. If an attacker steals a physical card number, the damage can be broad; if they get a virtual card, the organization can cancel that one card and keep the rest of the program running. Attackers often try to abuse the admin account that can issue, lock, or change cards, so strong authentication, approval workflows, alerts, and least-privilege access are essential defenses. Virtual cards are useful only when creation, spending, and revocation are tightly monitored.