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The DigiNotar breach is well documented, but the available forensic and official Dutch records do not confirm that MI6 was targeted. They establish that attackers compromised DigiNotar, a Dutch certificate authority, and used a fraudulent *.google.com certificate in a man-in-the-middle attack that predominantly affected users in Iran. That is evidence of certificate abuse—not proof that MI6’s systems were attacked or that a fraudulent MI6 certificate was issued.
What is established about the DigiNotar hack?
DigiNotar issued several kinds of digital certificates, including ordinary SSL certificates, qualified certificates, and Dutch government PKIoverheid certificates. A certificate authority (CA) is trusted to verify identities and issue certificates that browsers and other systems use to authenticate websites or services. Compromising a CA can therefore let an attacker create certificates that appear trustworthy, even when they falsely identify a site.
Fox-IT’s 2012 final forensic report says an intruder first gained unauthorized access to DigiNotar’s network on June 17, 2011. The report found that all eight servers managing certificate authorities had been compromised. Logs on compromised servers had been tampered with, which limited investigators’ ability to determine the full scope of certificate issuance.
The clearest documented misuse was a fraudulent wildcard *.google.com certificate. It was used in a man-in-the-middle attack, in which an attacker can position themselves between users and a website and exploit the false certificate to make an intercepted connection appear legitimate. Fox-IT concluded that the attack primarily affected users in Iran.
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Does the evidence show that MI6 was targeted?
Not in the sources available here. The searchable text of Fox-IT’s final report contains no mention of MI6, and the Dutch parliamentary chronology centers on the fraudulent Google certificate. Those records do not independently verify an MI6 certificate or an attack on MI6.
The distinction matters: a forged certificate bearing an organization’s name, if one existed, would indicate an attempt to impersonate that organization in a digital connection. It would not, by itself, show that attackers breached the organization’s own systems, reached its staff, or successfully intercepted its communications. The compromised CA created a broad risk of impersonation, but the specific MI6 claim remains unverified by these sources.
What do the impact figures mean?
Fox-IT recorded 654,313 OCSP “GOOD” responses for the fraudulent Google wildcard certificate, associated with 298,140 unique IP addresses. OCSP, or Online Certificate Status Protocol, is used to check whether a certificate is reported as valid or revoked. A “GOOD” response is a certificate-status response; it is not a count of people confirmed to have been attacked.
Fox-IT explicitly treated unique IP addresses as a rough proxy for affected users. One IP address can represent multiple people, while one person may connect through multiple IP addresses. The report also found that 95% of OCSP requests for the fraudulent certificate came from Iran. That geographic distribution supports the report’s assessment of where the attack was concentrated, but does not identify who was behind it.
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Fox-IT wrote that the intruder “appears to have had the specific intention” of abusing certificates issued by a trusted party to spy on many users in Iran. This is the investigation team’s conclusion about apparent intent, not proof of an actor’s identity, state sponsorship, or ultimate responsibility. The report described traces pointing to Iran and said suspected IP information was handed to Dutch police; those investigative indicators are not a judicial finding of attribution.
How did the incident unfold?
The dates below distinguish Fox-IT’s retrospective finding about first access from the date DigiNotar detected an intrusion reported in the Dutch parliamentary record.
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| Date | What happened |
|---|---|
| June 17, 2011 | Fox-IT’s final report identifies this as the intruder’s first unauthorized access to the network. |
| June 19, 2011 | The Dutch parliamentary record says DigiNotar detected an intrusion. Detection and the retrospectively identified first access are different events. |
| July 2, 2011 | Fox-IT says the first attempts to create rogue certificates took place. |
| July 10, 2011 | The first rogue certificate was successfully issued, according to Fox-IT. |
| August 28, 2011 | A user posted details of a fraudulent wildcard Google certificate after Chrome displayed a certificate warning. |
| August 29, 2011 | Google received multiple reports of a possible SSL man-in-the-middle attack, and DigiNotar revoked the wildcard certificate. |
| September 2, 2011 | Preliminary findings indicated that the CA server used for qualified and PKIoverheid certificates had been compromised. |
| September 3, 2011 | The Dutch government publicly withdrew trust in DigiNotar and its certificates. |
| September 28, 2011 | All qualified and PKIoverheid certificates issued by DigiNotar were revoked, according to Fox-IT’s timeline. |
Why did the Dutch government manage the withdrawal?
Withdrawing trust in a CA can disrupt more than ordinary website browsing: certificates may also support machine-to-machine communications and government services. The Dutch government chose a managed transition rather than abruptly ending every certificate’s trust. It publicly withdrew trust on September 3; Fox-IT’s timeline records the later September 28 revocation of all qualified and PKIoverheid DigiNotar certificates.
The Dutch Safety Board’s inquiry addressed how government bodies managed digital security, including the administrative and organizational processes for securing digital communications with citizens. It was not a technical forensic investigation of the DigiNotar intrusion, so it should not be treated as evidence about whether MI6 was targeted.
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What can readers conclude?
- The compromise of DigiNotar and issuance of rogue certificates are established by Fox-IT’s forensic report.
- The best-documented abuse was the fraudulent
*.google.comcertificate and a man-in-the-middle attack predominantly affecting users in Iran. - The reported counts describe OCSP responses and IP addresses, not confirmed individual victims.
- The MI6-specific claim is not confirmed by the cited forensic and official Dutch records; nor do those records establish a breach of MI6 systems.
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