Tag Archives: Mail

Microsoft hacked by Russian Midnight Blizzard; emails exfiltrated since Nov. 2023

[German]Microsoft has been successfully hacked by the Russian state hacker group Midnight Blizzard, also known as Nobelium. This was noticed on January 12, 2024, but the hackers were probably in the systems for months and were able to view and … Continue reading

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Microsoft IP addresses landed on blacklists (Jan. 2023)

[German]Brief note to the my readers, perhaps someone has observed something similar with customers or within its enterprise environments. It seems that some IP addresses that can be assigned to Microsoft mail servers have ended up on blacklists. It may … Continue reading

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Massive spam wave from outlook.com to office.com accounts

[German]A German blog reader contacted me a few hours ago because he noticed an extreme amount of spam from certain Microsoft outlook.com email accounts to his Microsoft Office office.com email account. After publishing the German edition of this blog post, … Continue reading

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Thunderbird 115: Suddenly refuse to sync mMails from outlook.com

[German]Brief information for Thunderbird users, who observe the mail client suddenly can't sync mails from Microsoft accounts (hotmail.com or outlook.com etc.). A manual intervention is necessary, where JavaScript has to be activated and then the authentication of the Microsoft accounts … Continue reading

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Windows 10/11 Mail app can Exchange ActiveSync

[German]Small addendum that Thomas B. already pointed out to me in Sept. 2022. It is about the possibility to access Exchange mailboxes with ActiveSync by means of the app delivered in Windows 10 and Windows 11. Advertising

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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 ...


Warning: Phishing Mail from "Microsoft" suggesting a password change

[German]Warning regarding a new phishing campaign that a blog reader alerted me to via email today (October 17, 2022). The mail apparently comes from Microsoft and claims that the password for the email account has been changed. If one had … Continue reading

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Barracuda Networks: Spam filter/virus scan blocks mails globally (September 29, 2022)

[German]Brief notification for administrators who use a mail protection / security solution from Barracuda Networks in an enterprise environment. Since tonight (September 29, 2022) there seems to be a problem that emails get stuck in their spam filters (Email Security … Continue reading

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Outlook/Apps failing sending mails? Microsoft has disabled SMTP (July 2022)

[German]Very brief information for users and administrators who use Microsoft 365 or Microsoft Office 365 with Exchange Online and are suddenly confronted with the problem that the sending of emails in Microsoft Outlook or in other applications is on strike. … Continue reading

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Outlook.com: IMAP-XOAUTH2 login fails – some mail clients affected

[German]Microsoft seems to have recently changed the authentication for the IMAP protocol on its Outlook.com email service. It is no longer possible to use XOAUTH2, so some mail clients refuse to cooperate. Here is a brief overview of the situation. … Continue reading

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(eMail-) Encryption with StartTLS as a security risk

[German]The encryption method StartTLS, which can be used in network communication, especially for e-mails, has a number of vulnerabilities that make it possible to break open communication by stealing access data, for example. This was already proven by German security … Continue reading

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