Omission of Security-relevant Information

The application does not record or display information that would be important for identifying the source or nature of an attack, or determining if an action is safe.


The following examples help to illustrate the nature of this weakness and describe methods or techniques which can be used to mitigate the risk.

Note that the examples here are by no means exhaustive and any given weakness may have many subtle varieties, each of which may require different detection methods or runtime controls.

Example One

This code logs suspicious multiple login attempts.

function login($userName,$password){

    return True;
    if(recentLoginAttempts($userName) > 5){
      writeLog("Failed login attempt by User: " . $userName . " at " + date('r') );


This code only logs failed login attempts when a certain limit is reached. If an attacker knows this limit, they can stop their attack from being discovered by avoiding the limit.

See Also

Audit / Logging Errors

Weaknesses in this category are related to audit-based components of a software system. Frequently these deal with logging user activities in order to identify undesir...

OWASP Top Ten 2017 Category A10 - Insufficient Logging & Monitoring

Weaknesses in this category are related to the A10 category in the OWASP Top Ten 2017.


Weaknesses in this category are related to the design and architecture of audit-based components of the system. Frequently these deal with logging user activities in o...

Comprehensive CWE Dictionary

This view (slice) covers all the elements in CWE.

Weaknesses without Software Fault Patterns

CWE identifiers in this view are weaknesses that do not have associated Software Fault Patterns (SFPs), as covered by the CWE-888 view. As such, they represent gaps in...

CWE Cross-section

This view contains a selection of weaknesses that represent the variety of weaknesses that are captured in CWE, at a level of abstraction that is likely to be useful t...

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