Given the vast amount of public money spent by MI5 the Security Service, especially on new computer systems, it is asonishing that they have allowed the SSL Digital Certificate for https://www.mi5.gov.uk to expire:
Issuer: OU=www.verisign.com/CPS Incorp.by Ref. LIABILITY LTD.(c)97 VeriSign, OU=VeriSign International Server CA - Class 3, OU="VeriSign, Inc.", O=VeriSign Trust Network
Serial Number: 5BD3 998F 7FFC 7F10 E1AF 83C6 A91C 6028
Valid from: 16-Apr-2009 01:00:00 BST
Valid Until:16-Apr-2012 00:59:59 BST (EXPIRED)
Public Key: RSA (4,096 bits)
SHA-1 Fingerprint: BA:02:E2:20:5A:4E:96:31:0B:47:8E:07:EF:DF:D8:3D:47:9C:C3:AE
Why was a new Digital Certificate not installed last week ?
Since the MI5 website re-directs to an SSL / TLS https:// only version , they have effectively created a Denial of Service attack on themselves.
This Connection is Untrusted web browser warnings do not give the impression of professional competence and respect for internet confidentiality, which potential users of their SSL / TLS encrypted
should expect, and upon which their lives and the lives of potential British targets may depend.
N.B. as with MI6 /SIS and GCHQ, only the full "www.mi5.gov.uk" resolves to the website URL - simply using "mi5.gov.uk" on its own, will not always work (except where your web browser fakes this for you).