How an unpatched Microsoft Exchange 0-day likely caused one of the UK’s biggest hacks ever - Enlarge / Building with Microsoft logo. (credit: Getty Images)

... - https://arstechnica.com/?p=1959987 #exchangeserver #microsoft #security #zeroday #biz&it

⚠️🚨 #Microsoft #Exchange Update Issue

"We are aware of Setup issues on non-English servers and have temporarily removed August SU from Windows / Microsoft update last night. If you are using a non-English language server, we recommend you wait with deployment of August SU until we provide more information."

https://techcommunity.microsoft.com/t5/exchange-team-blog/released-august-2023-exchange-server-security-updates/bc-p/3894481/highlight/true#M36648

#exchangeserver #sysadmin #patchday #itsecurity

How to Install #ExchangeServer 2019 #CumulativeUpdates #CumulativeUpdate

In this guide, we'll take you through the process of installing cumulative updates for Exchange Server 2019, using new features to simplify the update process introduced in the 2023 H1 CU13 patch. For load-balanced serve [...]
https://bit.ly/3MWb9zd #Server #Exchange #update #run #DAG
Source: Microsoft Tech Community Office 365 Blog

[📜] The Many Forms of Modern Authentication - An Exchange Server Story

Microsoft have updated #ExchangeServer 2019, with support for Modern Authentication, without Cloud Dependencies. Find out how it works and what it means for your environment here. 👇

https://micoolpaul.com/2023/05/05/the-many-forms-of-modern-authentication-an-exchange-server-story/

Exchange Server 2019 Gains Support for Modern Authentication

After seemingly ignoring the situation for years, Microsoft delivered modern authentication for Exchange Server (for pure on-premises organizations) in Exchange 2019 CU13. The solution uses ADFS to issue and manage the OAuth 2.0 tokens and is supported by the latest version of Outlook for Windows. Support for other clients is in the works.

https://practical365.com/modern-authentication-for-exchange-server/
#ExchangeServer

Health Checker : vérifier l’état de santé de ses serveurs Exchange On-Premise https://www.it-connect.fr/health-checker-verifier-letat-de-sante-de-ses-serveurs-exchange-on-premise/ #ExchangeServer #Powershell #Microsoft #Exchange #Astuce

Outlook Elevation of Privilege Vulnerability Leaks Credentials via NTLM

Among the latest set of patches released by Microsoft, a fix for CVE-2023-23397 is available to fix an NTLM vulnerability in Outlook for Windows clients. The update closes a hole where attackers can use specially formatted messages to force NTLM credentials to be sent outside the organization.

https://practical365.com/cve-2023-23397-ntlm-vulnerability/
#ExchangeServer

Microsoft Exchange Server 2019 – Configurer HSTS pour les connexions HTTPS https://www.it-connect.fr/microsoft-exchange-server-2019-configurer-hsts-pour-les-connexions-https/ #MicrosoftExchange2019 #WindowsServer2022 #ExchangeServer #IIS

Released: February 2023 Exchange Server Security Updates

https://techcommunity.microsoft.com/t5/exchange-team-blog/released-february-2023-exchange-server-security-updates/ba-p/3741058

for
Exchange Server 2013
Exchange Server 2016
Exchange Server 2019

#Microsoft #ExchangeServer #Security

Microsoft Exchange Server 2019 – Certificat SSL gratuit avec Let’s Encrypt https://www.it-connect.fr/microsoft-exchange-server-2019-certificat-ssl-gratuit-avec-lets-encrypt/ #MicrosoftExchange2019 #ExchangeServer #Let'sEncrypt

Microsoft Exchange Server 2019 – Voir la version de son serveur Exchange https://www.it-connect.fr/microsoft-exchange-server-2019-voir-la-version-de-son-serveur/ #MicrosoftExchange2019 #ExchangeServer #Microsoft

Noch immer gibt es zahlreiche Sicherheitsprobleme durch nicht gepatchte #ExchangeServer. #Microsoft warnt jetzt Kunden, die längst verfügbaren Sicherheitsupdates durchzuführen. https://winfuture.de/news,134275.html?utm_source=Mastodon&utm_medium=ManualStatus&utm_campaign=SocialMedia

Exchange Server 2013 End of Support Coming Soon - Microsoft Community Hub https://techcommunity.microsoft.com/t5/exchange-team-blog/exchange-server-2013-end-of-support-coming-soon/ba-p/3714799 #Microsoft #ExchangeServer #EoS

Die seit September bekannte Schwachstelle #ProxyNotShell von #Microsoft #ExchangeServer ist auf hunderten Servern in der #Schweiz nicht behoben worden. #Patch steht längst zur Verfügung.

Gleichzeitig sei #ITSecurity die oberste Priorität der #CIO.🤔

https://www.netzwoche.ch/news/2023-01-04/hunderte-schweizer-exchange-server-noch-ohne-proxynotshell-patch

http://www.netzwoche.ch/news/2022-12-07/die-plaene-der-schweizer-cios-fuer-2023 (siehe Grafik im Artikel)

#cybersecurity #techstuff

What fresh new #Microsoft #ExchangeServer hell have I entered? Off to do some googling.

Having "fun" renewing #Microsoft #ExchangeServer certificates today. I think I'd rather be manually sorting log files by activity type.

I have just updated the #desktop #calendar I use. It's called #Rainlendar - for reasons the author can explain:
https://www.rainlendar.net/

I like it because it can be set to float over other windows, or to be less obvious, and the basic display is very information dense without being intrusive

It can link to ics and other calendars, like #ExchangeServer and #GoogleCalendar

Pro version is €9.95 for life, with all updates.

#Recommended

@thurrott @leo @ihnatko #WIndows #Mac #Linux #PC

Microsoft Exchange Server 2019 – Découverte et configuration de l’Autodiscover https://www.it-connect.fr/microsoft-exchange-server-2019-decouverte-et-configuration-de-lautodiscover/ #MicrosoftExchange2019 #ExchangeServer #Messagerie #Exchange

Rackspace “fanatical about support”

Somewhat less fanatical about patching and getting service restored I guess.

#itsupport #rackspace #security #exchangeserver

📬 Exchange Server hat Löcher wie ein Schweizer Käse
#Hacking #AhnLab #ExchangeServer #Lockbit #PiotrBazydlo #WebShell #ZeroDayInitiative #ZeroDaySchwachstellen https://tarnkappe.info/artikel/hacking/exchange-server-hat-loecher-wie-ein-schweizer-kaese-257781.html