Author Archive | Matthew Lewis

OpenSSL July 2015 Update

On July 9, 2015, OpenSSL issued a security update to correct an issue opened by its June update. Specifically, this issue relates to alternative chains certificate forgery (CVE-2015-1793), i.e. an ability to “cause certain checks on untrusted certificates to be bypassed, such as the CA flag, enabling them to use a valid leaf certificate to act […]

Continue Reading

One Week Left for the Upgrade Assessment Discount

By now, you may have watched the upgrade webinar that explores Zimbra Collaboration’s three upgrade methods. With only one week left before the upgrade assessment discount expires, we want to share some tips an email sysadmin might find useful. Have good backups. Update your operating system. You can use yum to update Red Hat and CentOS […]

Continue Reading

Upgrade Assessment Savings Expire in 3 Weeks

For a limited time, customers who purchase an Upgrade Assessment from Zimbra Professional Services will be eligible to receive a discount (valued at up to $5,000) on related implementation services through Zimbra Professional Services. Sign up by July 1, 2015. The Zimbra Collaboration Upgrade Assessment, delivered by Zimbra Certified Professionals, provides expert recommendations, best practices, […]

Continue Reading

Logjam’s Impact on Zimbra Collaboration

Zimbra is aware of a newly disclosed SSL/TLS vulnerability that provides a potential malicious actor with a method to perform a Man-in-the-Middle (MitM) attack — the vulnerability is referred to as Logjam. Similar to FREAK, this attack targets export-grade encryption, specifically Diffie-Hellman key exchanges. For more information on the attack and how this applies to […]

Continue Reading

Introducing Zcast

On behalf of Zimbra, I am happy to introduce Zcast. In this new podcast series, Zimbra CMO Olivier Thierry covers a variety of technology topics that relate, primarily, to open source software, communication technology, business/product strategy, cybersecurity and data protection. The first in the series is with Zimbra partner MailGuard, founded in 2001 by CEO […]

Continue Reading

Copyright © 2022 Zimbra, Inc. All rights reserved.

All information contained in this blog is intended for informational purposes only. Synacor, Inc. is not responsible or liable in any manner for the use or misuse of any technical content provided herein. No specific or implied warranty is provided in association with the information or application of the information provided herein, including, but not limited to, use, misuse or distribution of such information by any user. The user assumes any and all risk pertaining to the use or distribution in any form of any subject matter contained in this blog.

Legal Information | Privacy Policy | Do Not Sell My Personal Information | CCPA Disclosures