Cyberveillecurated by Decio
Nuage de tags
Mur d'images
Quotidien
Flux RSS
  • Flux RSS
  • Daily Feed
  • Weekly Feed
  • Monthly Feed
Filtres

Liens par page

  • 20 links
  • 50 links
  • 100 links

Filtres

Untagged links
14 résultats taggé Exchange  ✕
MC1193689 - Microsoft baseline security mode for Office, SharePoint, Exchange, Teams, and Entra https://mc.merill.net/message/MC1193689
16/12/2025 21:33:23
QRCode
archive.org

Summary
Baseline Security Mode centralizes Microsoft’s recommended security standards for Office, SharePoint, Exchange, Teams, and Entra. Rolling out from November 2025 to March 2026, it provides admins with a dashboard to assess and improve security posture using impact reports and risk-based recommendations, with no immediate user impact.

More information
Introduction

Baseline Security Mode is a centralized experience that helps you meet Microsoft’s recommended security standards across Office, SharePoint, Exchange, Teams, and Entra. It leverages Microsoft’s threat intelligence and insights from two decades of Microsoft Response Center cases to strengthen your organization’s security posture and prepare for evolving AI-driven threats.
When this will happen:

Public Preview: Rollout begins mid-November 2025 and completes by late January 2026.
General Availability (Worldwide): Rollout begins mid-November 2025 and completes by late January 2026.
General Availability (GCC): Rollout begins early January 2026 and completes by late January 2026.
General Availability (DoD): Rollout begins early February 2026 and completes by late February 2026.
General Availability (GCCH): Rollout begins early March 2026 and completes by late March 2026.
How this affects your organization:

Who is affected: Global admins and security admins managing Microsoft 365 tenants across Office, SharePoint, Exchange, Teams, and Entra.
What will happen:

A new Baseline Security Mode dashboard will be available in the Microsoft 365 admin center.
Admins can view the tenant’s current security posture compared to Microsoft’s recommended minimum security bar.
Admins can run impact analysis reports to assess changes before applying them.
Recommendations will be grouped by risk level, with statuses such as “At risk” or “Meets standards.”
No immediate user impact unless admins apply changes.
What you can do to prepare:

Navigate to Microsoft 365 admin center > Settings > Org Settings > Security & privacy > Baseline Security Mode.
Review recommendations marked as “At risk.”
Initiate an impact report to understand potential changes.
Apply recommendations to bring your tenant to “Meets standards.”
Communicate upcoming changes to your helpdesk or security teams.

Learn more: Baseline security mode settings | Microsoft Learn

Compliance considerations:

No compliance considerations identified; review as appropriate for your organization.and risk-based recommendations, with no immediate user impact.

mc.merill.net EN Microsoft BaselineSecurityMode Office SharePoint Exchange Teams Entra
Swiss stock exchange halts trading due to technolgy issues https://www.swissinfo.ch/eng/banking-fintech/six-swiss-exchange-halts-again-as-technology-issues-are-ongoing/85568336
01/08/2024 22:59:37
QRCode
archive.org
thumbnail

The stock exchange was forced to halt equity trading for several hours on Wednesday due to persistent technical snags.

swissinfo EN 2024 Swiss stock exchange halts technolgy issues Switzerland
Plus de 2000 serveurs Exchange suisses vulnérables à une faille https://www.ictjournal.ch/news/2024-02-20/plus-de-2000-serveurs-exchange-suisses-vulnerables-a-une-faille
20/02/2024 17:57:09
QRCode
archive.org
thumbnail

Environ 97’000 serveurs Exchange dans le monde sont potentiellement concernés par une faille permettant d'effe

ictjournal FR 2024 CH Suisse Exchange CVE-2024-21410
New Microsoft Exchange zero-days allow RCE, data theft attacks https://www.bleepingcomputer.com/news/microsoft/new-microsoft-exchange-zero-days-allow-rce-data-theft-attacks/?s=09
04/11/2023 09:39:26
QRCode
archive.org
thumbnail

Microsoft Exchange is impacted by four zero-day vulnerabilities that attackers can exploit remotely to execute arbitrary code or disclose sensitive information on affected installations.

bleepingcomputer EN 2023 Microsoft Exchange RCE zero-day ZDI
ZDI-23-1578 | Zero Day Initiative https://www.zerodayinitiative.com/advisories/ZDI-23-1578/?s=09
04/11/2023 09:38:18
QRCode
archive.org

(0Day) Microsoft Exchange ChainedSerializationBinder Deserialization of Untrusted Data Remote Code Execution Vulnerability

zerodayinitiative EN 2023 0-Day Microsoft Exchange ChainedSerializationBinder Deserialization RCE
Throttling and Blocking Email from Persistently Vulnerable Exchange Servers to Exchange Online - Microsoft Community Hub https://techcommunity.microsoft.com/t5/exchange-team-blog/throttling-and-blocking-email-from-persistently-vulnerable/ba-p/3762078
27/03/2023 07:15:28
QRCode
archive.org
thumbnail

As we continue to enhance the security of our cloud, we are going to address the problem of email sent to Exchange Online from unsupported and unpatched Exchange servers. There are many risks associated with running unsupported or unpatched software, but by far the biggest risk is security. Once a version of Exchange Server is no longer supported, it no longer receives security updates; thus, any vulnerabilities discovered after support has ended don’t get fixed. There are similar risks associated with running software that is not patched for known vulnerabilities. Once a security update is released, malicious actors will reverse-engineer the update to get a better understanding of how to exploit the vulnerability on unpatched servers.

microsoft techcommunity EN 2023 announce Blocking Email Exchange unpatched
Russian Citizen Accused of Running Cryptocurrency Exchange Used by Criminals https://www.nytimes.com/2023/01/18/us/politics/russian-citizen-bitzlato-cryptocurrency.html?mid=1#cid=128159
19/01/2023 14:11:14
QRCode
archive.org

The charges were part of an intensifying effort by federal law enforcement agencies, in conjunction with European partners, to combat international cryptocurrency schemes and illegal transactions.

nytimes EN 2023 Russian Accused Cryptocurrency Exchange Criminals bitzlato
Russian founder of a cryptocurrency exchange known for funneling ransomware profits arrested https://www.cyberscoop.com/cryptocurrency-bitzlato-exchange-ransomware-profits-arrested/
19/01/2023 14:08:11
QRCode
archive.org
thumbnail

The arrest comes as the U.S. ramps up efforts to crack down on attempts by cybercriminals to use cryptocurrency to evade sanctions.

cyberscoop EN 2023 cryptocurrency exchange founder ransomware arrested Hydra Marketplace
The OWASSRF + TabShell exploit chain https://blog.viettelcybersecurity.com/tabshell-owassrf/
09/01/2023 23:56:01
QRCode
archive.org
thumbnail

We see that one of our vulnerabilities is exploited in the wild Link. So we decided to public the detail analysis of our two bug chains. Any customer has enough information to mitigate these bugs. The vendor also released all patches a week ago. This blog post shares the detail

viettelcybersecurity EN 2022 Exchange TabShell exploit chain OWASSRF vulnerabilities
Rackspace Cloud Office suffers security breach https://doublepulsar.com/rackspace-cloud-office-suffers-security-breach-958e6c755d7f
05/12/2022 08:52:08
QRCode
archive.org

Thousands of small to medium size businesses are suffering as Rackspace have suffered a security incident on their Hosted Exchange service.

Yesterday, 2nd December 2022, Rackspace announced an outage to their Hosted Exchange Server:

doublepulsar EN 2022 Rackspace Cloud Office breach Exchange
A New Attack Surface on MS Exchange Part 4 - ProxyRelay! https://devco.re/blog/2022/10/19/a-new-attack-surface-on-MS-exchange-part-4-ProxyRelay/
19/10/2022 07:03:05
QRCode
archive.org
thumbnail

Hi, this is a long-time-pending article. We could have published this article earlier (the original bug was reported to MSRC in June 2021 with a 90-days Public Disclosure Policy). However, during communications with MSRC, they explained that since this is an architectural design issue, lots of code changes and testings are expected and required, so they hope to resolve this problem with a one-time CU (Cumulative Update) instead of the regular Patch Tuesday. We understand their situation and agree to extend the deadline.

devco.re EN 2022 CVE-2021-26414 CVE-2022-21979 Exchange Microsoft-Exchange ProxyRelay
Warning: New attack campaign utilized a new 0-day RCE vulnerability on Microsoft Exchange Server https://gteltsc.vn/blog/warning-new-attack-campaign-utilized-a-new-0day-rce-vulnerability-on-microsoft-exchange-server-12715.html
30/09/2022 09:27:43
QRCode
archive.org
thumbnail

Circa the beginning of August 2022, while doing security monitoring & incident response services, GTSC SOC team discovered that a critical infrastructure was being attacked, specifically to their Microsoft Exchange application. During the investigation, GTSC Blue Team experts determined that the attack utilized an unpublished Exchange security vulnerability, i.e., a 0-day vulnerability, thus immediately came up with a temporary containment plan.

gteltsc.vn EN 2022 Microsoft-Exchange Exchange 0-day RCE vulnerability campaign IoCs
Malicious OAuth applications abuse cloud email services to spread spam https://www.microsoft.com/security/blog/2022/09/22/malicious-oauth-applications-used-to-compromise-email-servers-and-spread-spam/
24/09/2022 00:50:46
QRCode
archive.org
thumbnail

Microsoft discovered an attack where attackers installed a malicious OAuth application in compromised tenants and used their Exchange Online service to launch spam runs.

microsoft EN 2022 Exchange OAuth abuse spam Exchange attack
The SessionManager IIS backdoor: a possibly overlooked GELSEMIUM artefact https://securelist.com/the-sessionmanager-iis-backdoor/106868/
30/06/2022 22:25:26
QRCode
archive.org
thumbnail

In early 2022, we investigated an IIS backdoor called SessionManager. It has been used against NGOs, government, military and industrial organizations in Africa, South America, Asia, Europe, Russia and the Middle East.

securelist EN 2022 APT Backdoor Malware Microsoft Exchange Targeted IIS-attacks Vulnerabilities GELSEMIUM
4944 links
Shaarli - Le gestionnaire de marque-pages personnel, minimaliste, et sans base de données par la communauté Shaarli - Theme by kalvn