[dv] Add cm_sec as an item in V2 checklist

Will create an another PR to update individual checklist in IPs

Signed-off-by: Weicai Yang <weicai@google.com>
diff --git a/doc/project/checklist.md b/doc/project/checklist.md
index 8044e6a..94bdef3 100644
--- a/doc/project/checklist.md
+++ b/doc/project/checklist.md
@@ -410,6 +410,14 @@
 
 Sub-modules that are pre-verified with their own testbenches have already reached V2 or a higher stage.
 
+### SEC_CM_PLANNED
+
+<!-- TODO, add the link to security hardening guidelines doc -->
+Security countermeasures are planned and documented.
+- Common countermeasure features (such as shadowed reg, hardened counter etc) can be tested by importing common sec_cm testplans, tests and adding the bind file `cm_sec_bind`.
+- Additional checks and sequences may be needed to verify those features. Document those in the individual testplan.
+- Create testplan for non-common countermeasures.
+
 ### NO_HIGH_PRIORITY_ISSUES_PENDING
 
 All high priority (tagged P0 and P1) design bugs have been addressed and closed.
@@ -436,6 +444,13 @@
 
 The V3 checklist has been reviewed to understand the scope and estimate effort.
 
+## V2S
+
+### SEC_CM_VERIFIED
+
+<!-- TODO, add the link to cm verif methodology doc -->
+Security countermeasures are verified.
+
 ## V3
 
 To transition from V2 to V3, the following items are expected to be completed.