VeriSign dead cert causes net instability

VeriSign dead cert causes net instability

The expiration of one of VeriSign's master digital certificates on
Wednesday created confusion for Net users and glitches to the
operation of some applications, notably Norton Anti-Virus (NAV).

After the cert VeriSign used to sign other certs expired, the chain of
trust was broken, leaving some aps unable to set up a secure
connection. These apps then defaulted to trying to access Verisign's
certificate revocation list server (crl.verisign.com) which, faced
with a huge extra load, buckled under the pressure.

Verisign has posted an advisory on the problem here, detailing server
updates needed to resolve application instability. Essentially where
there are problems traffic needs to be directed to a new Global Server
Intermediate Root CA.

Users of Java aps and older IE browsers were affected by the issue but
(judging by our postbag) NAV users were worst affected. NAV Users saw
their computers slow to a crawl and Microsoft office apps not starting
properly because of the problem.

Symantec has posted an explanatory note on the problem which echoes
Verisign's advice.