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Author: Josh Bryant

Defending Active Directory Against Cyberattacks

November 22, 2019 Josh Bryant Leave a comment

Back in April of 2016, Zaid Arafeh, Clare Kearney, and I, recorded a 7 part series for the Microsoft Virtual…

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Hunting Webshells: Tracking TwoFace

September 9, 2019 Josh Bryant Leave a comment

Microsoft Exchange Servers are a high-value target for many adversaries, which makes the investigation of them during Incident Response vital.…

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The ABCs of Containment, Eradication, and Recovery

August 30, 2019 Josh Bryant Leave a comment

In the physical realm, a successful hunt ends with either a kill or a capture.  While some might enjoy the thrill…

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Best of Both Worlds: Blending Tactics from the Public and Private Sectors

Josh Bryant Leave a comment

Public and private enterprises face the same threats, and yet often have different approaches to defense. What if you could…

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The Hitchhiker’s Guide to Data Breaches

Josh Bryant Leave a comment

The results are in, you’ve been breached. It’s officially the worst day of your career. How will you handle what…

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Reducing the Exchange and Active Directory Attack Surface

February 12, 2019 Josh Bryant Leave a comment

Three years ago I wrote a document titled “Removing Exchange’s ability to impact Tier 0 and Tier 1” that was…

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Filed under: Active Directory, Cybersecurity, Exchange, Exchange 2010, Exchange 2013, Exchange 2016, Exchange 2019

FixTheExchange.com is 7 years old today!

August 31, 2018 Josh Bryant Leave a comment

How fitting that 7 years after I started this blog I would relaunch it on a new platform (more on…

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Hunting Webshells on Microsoft Exchange Server

May 8, 2017 Josh Bryant Leave a comment

Microsoft Exchange Servers are a high value target, making investigation of them during Incident Response vital, but where do you…

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Filed under: Cybersecurity, Exchange 2013, Exchange 2016

Join me at the 2017 SANS Threat Hunting and Incident Response Summit – April 18th and 19th

December 13, 2016 Josh Bryant Leave a comment

I’ll be presenting a brand new session titled “Hunting Webshells on Microsoft Exchange Server” at the 2017 SANS Threat Hunting…

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Filed under: Cybersecurity, DFIR, Exchange 2010, Exchange 2013, Exchange 2016

Exchange 2016 SP1 to run on Linux!

April 1, 2016 Josh Bryant Leave a comment

Ever since last month’s announcement that Microsoft SQL Server will be coming to Linux, quiet rumors have been floating around…

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Filed under: April Fools, Exchange 2016

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Josh M. Bryant In reply to SwiftInsecurity
@SwiftOnSecurity You forgot to incorporate corn and planes into these images...
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Josh M. Bryant In reply to Andrew Thompson
@ImposeCost I remember asking the hotel front desk for a good local restaurant and being told I should try the Texas Roadhouse that had just opened. 🤦‍♂️
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Josh M. Bryant In reply to Andrew Thompson
@ImposeCost I was unreasonably outraged at being so close to Mexico, but NOT being able to find a Mexican restaurant in town when I was there.
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Josh M. Bryant In reply to 
Finally got to the bottom of it... https://t.co/qJwAecIWQh
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Josh M. Bryant In reply to 
I had asked it earlier in the conversation why it was adding the 😊 emoji at the end of every response. It told me that it did it so that it would seem more friendly...

Trading "friendly" to try and be more clear now I guess. https://t.co/GDTmTkVW54
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Josh M. Bryant Josh M. Bryant · 2 days ago
@FixTheExchange
I tried to get Bing to tell me what the "# of 15" below its responses means. It couldn't understand and ended the conversation before we got to 15. https://t.co/rcc9RnEWrB
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RSS You had me at EHLO…

  • Throttling and Blocking Email from Persistently Vulnerable Exchange Servers to Exchange Online March 23, 2023
    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 […]
    The_Exchange_Team
  • Best Practices for Migrating from Exchange Server 2013 to Exchange Server 2019 March 20, 2023
    Time is up for Exchange Server 2013, and you should be finalizing your migrations. If your migration is still ahead of you or nearing completion, then this post is for you. We wanted to provide Microsoft’s best practices for preparing and planning your migration from Exchange 2013 to Exchange Server 2019. It’s important to note […]
    The_Exchange_Team
  • Released: March 2023 Exchange Server Security Updates March 14, 2023
    Microsoft has released Security Updates (SUs) for vulnerabilities found in: Exchange Server 2013 Exchange Server 2016 Exchange Server 2019 SUs are available in a self-extracting auto-elevating .exe package, as well as the original update packages (.msp files), which can be downloaded from the Microsoft Update Catalog. SUs are available for the following specific versions of […]
    The_Exchange_Team
  • Exchange Server 2013 Reaches End of Support Next Month March 10, 2023
    On April 11, 2023 (31 days from today), Exchange Server 2013 reaches End of Support! But you know that because we've already announced that here and here and here and here, and here (just kidding, that last one was actually for Exchange Server 2003! but all the other ones are real). So, we thought we would instead look back […]
    The_Exchange_Team
  • Deprecation of Remote PowerShell (RPS) for New Exchange Online Tenants March 7, 2023
    We previously announced the general availability of REST-based Exchange Online PowerShell v3 module (September 2022) and the deprecation of Remote PowerShell (RPS) Protocol (December 2022). Today, we are announcing that starting April 1, 2023, we will start blocking RPS connections for all tenants created on or after April 1, 2023. After April 1, 2023, new tenants will not […]
    The_Exchange_Team
  • Troubleshooting Compliance Retention Policies in Exchange Online February 27, 2023
    In Part 1, I provided steps to troubleshoot the Legacy Exchange Retention policies, and in this part, Part 2, I delve into Compliance Retention policies. I look at two different scenarios that may impact a mailbox, providing step-by-step guidance on how to navigate and resolve issues you may encounter. Scenario 1: Clearing the Recoverable Items […]
    The_Exchange_Team
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