Why Identity & Access Management Is Now a Data Protection Requirement

When people picture a data breach, they imagine sophisticated malware punching through a firewall. The reality is far more boring — and far more common. Most breaches start with a valid username and password in the wrong hands. No exotic hacking required. Someone just… logs in.

The receipts

Verizon’s 2025 Data Breach Investigations Report puts numbers to it. Stolen credentials remain the single most common way in — involved in about 31% of breaches, more than double any other method. Credential abuse kicks off 22% of breaches outright, and a staggering 88% of attacks on web applications involve stolen credentials. Add phishing (16% of breaches) and the broader human element (a role in 60%), and a picture emerges: the front door, not the walls, is where businesses lose.

What IAM really is (minus the jargon)

Identity and Access Management is simply making sure the right people have the right access — and nothing more. Three ideas do most of the work: strong authentication (proving you are who you say), least privilege (people can only reach what their job requires), and prompt offboarding (access disappears the moment someone leaves). It’s the difference between handing every employee a master key and giving each one a badge that opens only their own doors.

The MFA asterisk

“Just turn on MFA” used to be the whole answer. It’s still essential — but the 2025 data shows attackers increasingly bypassing weaker forms like one-time codes and simple push approvals. The upgrade is phishing-resistant MFA — passkeys and hardware security keys (FIDO2) — that can’t be tricked out of you. If you make one change this year, make it that.

Why this is a data-protection issue, not just an IT one

Here’s the connection people miss: identity is the lock on everything else — including your backups. An attacker with admin credentials doesn’t need to defeat your backup system; they can just log in and delete it. Strong IAM keeps the immutable copy, the cloud storage, and your sensitive data out of the wrong hands in the first place. Business email compromise alone cost victims $6.3 billion in a single year — almost all of it downstream of a stolen login.