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Tag Archives: Exchange
Update on ProxyLogon hafnium exchange issue (March 12, 2021)
[German]The Exchange mass hacking by the Hafnium group as well as the issue around ProxyLogon vulnerabilities won't let us off the hook. To wrap up the week, here's a quick roundup: there are revisions from Microsoft on the topic (the … Continue reading
Exchange hack: new patches and new findings
[German]Microsoft issued more out-of-band updates for older Microsoft Exchange Server CUs (which have already fallen out of support) last night. In addition, it is now clear, when the attack waves started and what could have protected against the hack, although … Continue reading
Cyber attack on Exchange server of the European Banking Authority
[German]The European Banking Authority has fallen victim to a cyber attack. Their Exchange servers were compromised via vulnerabilities patched in early March 2021. Here is some information on what I know so far.
Exchange Hack News – Test tools from Microsoft and others
[German]The Hafnium hacker group has probably managed to compromise hundreds of thousands of Exchange installations worldwide via vulnerabilities. A patch to close the vulnerabilities is available, but it may be too late. However, tools are now available from Microsoft and … Continue reading
Exchange isues with ECP/OWA search after installing security update (March 2021)
[German]Brief information for administrators of Microsoft Exchange servers who have yet to install the March 2021 security update. The security update released this week by Microsoft for Microsoft on-premise Exchange servers (2010 to 2019) is indeed intended to close four … Continue reading
Why ISL Online: Critical factors when choosing a remote desktop solution
[Sponsored Post]In the rapidly evolving IT world, choosing the right remote desktop software is critical for organizations that value security, ease of use and reliability. One provider of secure remote access that has been on the market since 2001 is ISL Online, which presents some considerations for choosing such software below. More ...
Important notes from Microsoft regarding the Exchange server security update (March 2021)
[German]Microsoft warns, that installing the March 2021 cumulative security updates for Exchange servers need to be done with administrative privileges. Otherwise the patch will not close the vulnerabilities. In addition, German BSI (Federal Office for Information Security) warns that thousands … Continue reading
Exchange server 0-day exploits are actively exploited
[German]Microsoft warns: Four 0-day vulnerabilities are combined for targeted attacks on Exchange via Outlook Web App. Administrators of on-premises Microsoft Exchange servers should urgently respond and install the updates released on March 2, 2021. A security update is also still … Continue reading
Security update for Exchange Server 2013-2019 (Nov. 2020)
[German]Short addition to a topic, which is already some days here on the agenda. Microsoft has also released security updates for Exchange Server 2013 to 2019 on November 10, 2020.
Still Exchange servers unpatched for CVE-2020-0688 (Nov. 2020)
[German]Just a brief note to administrators of Microsoft Exchange servers: Did you patch them against the CVE-2020-0688 remote execution vulnerability? German CERT-Bund has been warning for weeks that numerous German Exchange servers accessible via the Internet are still vulnerable. I … Continue reading
Exchange Online service disruption? (August 11,-14, 2020)
[German]Since 11.8.2020 Microsoft has been experiencing a disruption in Exchange Online service. The service is occasionally disrupted in sub-functions (login, access). Blog reader Andreas P. has provided me with some information from the Dashboard for Administrators.