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About the Incidents category
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0
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3090
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January 9, 2016
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2025.12.16 ACME API Outage
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0
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236
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December 19, 2025
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2025.07.21 Complete API outage
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0
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421
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September 2, 2025
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2025.06.09 Deployed Unreviewed Boulder Code
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0
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197
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June 18, 2025
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2025.03.18 Early CRL Removal
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1
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433
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March 25, 2025
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2025.03.21Failure to Document Analysis of Detected Vulnerabilities
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0
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193
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March 21, 2025
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2024.09.27 No Meaningful Subject Distinguished Name
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3
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710
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October 4, 2024
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2024.03.28 CP/CPS Deviation Regarding keyCompromise Key Blocking
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0
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381
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March 28, 2024
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2023.06.15 Certificate Policies Extension Mismatch
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4
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2440
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June 20, 2023
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2022.11.08 End Entity CRLs Not Reissued On Time
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0
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595
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November 16, 2022
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API traffic from Plesk is blocked
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1
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1117
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April 28, 2022
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2022.01.29 Failure to provide OCSP Responses for some certificates
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0
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923
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February 2, 2022
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2022.01.25 Issue with TLS-ALPN-01 Validation Method
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2
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37994
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February 2, 2022
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Log4j vulnerability (CVE-2021-44228)
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0
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4716
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December 11, 2021
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2021.10.11 Certificate Mis-Issuance related to Internationalized Domain Names (IDN) formatting
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0
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1124
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October 13, 2021
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2021.09.07 Delay updating OCSP responses
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2
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1160
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September 10, 2021
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2021.06.09 Non-Revocation of Certificates from Previous Incident (certificate lifetimes)
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0
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1243
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June 10, 2021
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2021.06.08 Certificate Lifetime Incident (valid for an extra one second)
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0
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25997
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June 9, 2021
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2020.12.22 Failure to audit log subscriber certificate OCSP updates
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0
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1012
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December 23, 2020
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2020.09.08 Failure to renew OCSP responses within acceptable timelines
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0
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990
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September 28, 2020
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2020.06.08 Delegated OCSP Signer Expiration for Alternate Chains
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0
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1512
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June 12, 2020
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2020.02.29 CAA Rechecking Bug
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3
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138671
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March 7, 2020
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2019.11.17 Autoincrement maxed out
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1
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4238
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November 23, 2019
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2019.08.28 Let’s Encrypt OCSP Responder Returned “Unauthorized” for Some Precertificates
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0
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1838
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August 29, 2019
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2019.08.20 Incorrect OCSP responses under certain conditions
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0
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1374
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August 27, 2019
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2019.01.03 Donor Email Option Not Respected
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0
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1409
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January 9, 2019
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2018.11.30 Production Google CT Log Submission Failures
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0
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1869
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December 18, 2018
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2018.08.23 OCSP Responder Incident
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0
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2424
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August 23, 2018
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2018.07.30 Domain Resolution Interruption
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0
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3572
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August 2, 2018
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2018.05.29 Subscriber Email Address Disclosure
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0
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1890
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May 30, 2018
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