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12/06/2026 9:52 pm
TL;DR: Blocking policies for Active Directory, including Enterprise Password Enforcer, LSAS Guardian, LDAP Ping blocking, and DC replication blocking for DC Sync attack protection, are the focus of Netwrix’s on-demand webinar, according to Netwrix. The practical question is not whether AD monitoring exists, but whether controls can actively prevent abuse in real time.
NHIMG editorial — here’s why we think this discussion matters
By the numbers:
- 80% of identity breaches involved compromised non-human identities such as service accounts and API keys.
- 97% of NHIs carry excessive privileges, increasing unauthorised access and broadening the attack surface.
- Only 5.7% of organisations have full visibility into their service accounts.
Questions worth separating out
Q: How should teams reduce Active Directory abuse if monitoring alone is not enough?
A: Teams should add preventative controls that stop high-risk directory actions, especially replication abuse, sensitive subsystem access, and suspicious probing.
Q: Why do blocking policies matter in identity security programmes?
A: Blocking policies matter because they can reduce dwell time and limit blast radius when identity abuse is already underway.
Practitioner guidance
- Restrict replication-capable principals Inventory every account and service identity with directory replication rights, then remove any that do not have a documented operational need.
- Use blocking policies for high-risk AD operations Deploy blocking rules for password enforcement, LSASS-related activity, LDAP probing, and replication abuse where those controls will not interfere with legitimate administration.
- Align AD controls with NHI governance Treat service accounts and automation identities as first-class directory risk sources, then review whether their access paths can trigger sensitive operations that human account monitoring would miss.
What to expect at the briefing
Netwrix's full webinar covers the operational detail this post intentionally leaves for the source:
- Practical demonstrations of how the blocking policies behave against real Active Directory activity patterns.
- Session-level walkthroughs of Enterprise Password Enforcer, LSAS Guardian, LDAP Ping blocking, and DC replication blocking.
- Implementation detail on how the controls fit real-time identity threat detection and response workflows.
- Examples of how the policies are used on domain controllers in live environments.
Active Directory blocking policies: are your controls keeping up?
Explore further
13/06/2026 12:14 am
Blocking controls matter because Active Directory abuse is often an execution problem, not just a visibility problem. If attackers can move from reconnaissance to credential access to replication abuse without interruption, alerting alone arrives too late to protect identity trust. The article points to a practical shift in control design: stop the most dangerous AD actions while they are being attempted, not after they are logged. Practitioners should treat prevention and detection as complementary, not interchangeable.
A few things that frame the scale:
- 80% of identity breaches involved compromised non-human identities such as service accounts and API keys, according to Ultimate Guide to NHIs.
- 91.6% of secrets remain valid five days after the targeted organisation is notified, showing a critical gap in remediation procedures.
A question worth separating out:
Q: Which identity controls should be reviewed first in an AD-heavy environment?
A: Start with replication rights, privileged service accounts, and any identity that can touch LSASS or perform sensitive directory queries. Those controls have the highest blast radius and the greatest potential to enable rapid compromise. They should be reviewed alongside lifecycle and offboarding processes, not only during incident response.
👉 Read our full editorial: Active Directory blocking policies and identity threat response
