Article Archive

Echo360 Server Retiring April 2nd

Caltech’s Echo360 lecture capture solution for recording courses, seminars, and workshops has migrated to the cloud. After April 2, 2019, links to recordings made before September 2017 will no longer be accessible. Please contact Academic Media Technologies ( to request new links to your migrated content.

Scam warning: "Are you available?” (I need you to buy gift cards).

University campuses, including ours, are seeing a recent increase in a particular type of email-based scam, in which criminals impersonate faculty or staff with the goal of tricking their victims into buying gift cards.  This type of scam, known as "gift card fraud", is lucrative for criminals, and the lost funds are virtually impossible to recover.

Protect yourself ...

Unauthorized print jobs

Many networked printers here and at other sites recently began exhibiting problems in which the printer spewed out all of its available paper by printing out advertisements, offensive pictures and text, or gibberish.  

IMSS does not recommend leaving networked printers exposed to the public Internet, since typically there are a variety of abuse-prone services enabled on such p...

Unix Webmail Retired - October 1, 2018

Unix Webmail is now retired. To access your email on the web, please log in to Office 365 webmail at


Applications Compatibility with Firefox ESR 60, Safari 12 & Java 8u181

New versions of Firefox including ESR 60, Safari 12, and Java 8u181 will affect compatibility with some of our applications, including: 

  • Time Keeping (Kronos) 
    The full-featured Java version of Time Keeping (Kronos) will not work with newer versions of Firefox nor Safari 12. Instead, please use Internet Explorer 11 with Java 8u181 or higher, or use Time Ke...

Incompatibility Issues with MacOS and Safari Updates

The latest Safari update and Mac OS X Mojave are incompatible with Caltech applications that use Java, which include the Oracle Applications and Kronos Timekeeping. If you use any of these applications as part of your Caltech work, please do not update the OS or Safari on your Mac at this time. IMSS will provide more information as we work on a resolution for this issue. ...

Box for iOS 10 will no longer be supported

Upon the release of iOS 12, Box will no longer continue support for iOS 10. This means:

  • Users will no longer be able to receive new app updates if they are on iOS 10
  • Users will no longer receive any fixes or new features for the Box app on iOS 10
  • The latest version of the app on iOS 10 is still functional at this time

The iOS devices ...

New Look for Electronic Payslip

Effective August 25th, an Oracle update will change the look of the Electronic Payslip home page to a dashboard with graphs and access to PDF documents of your payslips. For questions about this, please contact the Help Desk (x3500,,

Email security update may require re-login

As part of our efforts to improve email security, IMSS is making an Office 365 configuration change on Monday, March 26. One effect of this change is that users may be asked to re-authenticate on their email client. After, March 26th, if prompted to sign in again, please do so as shown in the images below. You will only need to do this once. If ...

Red Hat Satellite Upgrade

Red Hat Satellite v5, has reached end of life and will be decommissioned on Monday, November 27th. After November 27th, please follow instructions below to upgrade your servers to the new Red Hat Satellite v6 system.

Please issue the following commands as root:

"mv /etc/sysconfig/rhn/systemid /etc/sysconfig/rhn/systemid.bck"

Docushare Phish

Many Caltech recipients received one or more messages this afternoon claiming to be about an important document being shared via Docushare. This message is a fake, designed to steal your access.caltech credentials and should be deleted immediately. If you clicked the link and tried to log in, please change your access.caltech password right away or co...

Box - New web experience

Box has announced a new and improved, more personalized user experience on the web. This is a change for look and feel, your content will not be impacted. This new Box web experience will replace the existing interface on September 8.

Box new experience, includes:


Update: Ransomware In The News

A new ransomware outbreak began early in the morning on June 27th, involving a different variant known as Petya, or PetyaWrap.  Petya takes a different approach to encrypting the victim's files, but as with Wannacry, the best defense is prevention with good securi...

Changes to Hardware Repair Service

Effective immediately, IMSS will no longer offer in-house printer or Mac warranty repair. While we encourage you to continue to contact the Help Desk as a first resource to determine if your issue is a hardware problem, IMSS recommends working with the following local vendors for hardware repair: 

  • For Mac warranty repairs, contact Caltech Wired for authorized service (...

Runaway unauthorized print jobs

Many networked printers here and at other sites are exhibiting problems in which the printer spews out all of its available paper with printed gibberish.  This appears to be an unintended side effect of a network attack tool in recent use, which searches for unsecured FTP services.  Some printers include an FTP service by default, and certain models react badly when they receive im...

Beware fake campus emergency alerts

Caltech and other universities have been receiving phish that claim to come from Campus Security about a situation on campus. They contain a link that will either take you to a fake login page or to a page infected with malware. Since any link in a real Caltech Alert email is optional we recommend never clicking on any link in such an email.

For more inform...

IMSS implementing anti-spoofing measure

On Thursday, November 3 at 10:00AM, IMSS will be making some changes to the main campus email servers to reject incoming mail from off-campus sources where the sender is sending from an address without logging in (aka spoofing). Most legitimate Caltech mail users already log in when sending mail, so this should have little impact. Exceptions have also been made for authoriz...

EZProxy phishing scam

Many people may have received a message this morning claiming to be from an academic colleague, and referencing a link that looks like a Caltech Library EZProxy link.  The link points to a fraudulent site intended to capture Caltech login credentials.  The site is blocked from campus and we are working to get it taken down.  If you received such a message, do not attempt to lo...

Phisher scam pointing to fake webmail site

Messages titled "Urgent Network Failure" or "Office of Information and Technology" are telling users to login to retrieve queued mail and "reactivate service", but actually point to a fake webmail website. Mousing over the link without clicking will reveal that the link actually points to a non-Caltech website. The fake website is blocked from campus, ...

IMSS Exchange Public Folders Issue

IMSS Exchange Public folders are currently inaccessible. Note that this does not affect Office 365 public folders - only on-premises Exchange public folders are affected. We are working as quickly as possible to resolve the issue and will provide further updates as we receive them. Thank you for your patience.

iOS 9.3.5 Security Update

Apple recently issued a patch to fix a dangerous iOS security vulnerability. The update is available for iPhone 4s and later, iPad 2 and later, and iPod touch (5th gen) and later. Note that IMSS-managed mobile devices will be automatically updated if the end user accepts the update. Others should also be prompted by iOS to update, but can also manually do so by opening Settings > Gen...

Zip files quarantined by Office 365/Exchange

IMSS would like to remind Office 365 and IMSS Exchange users that incoming messages containing .zip files will have the attachment quarantined. This change was made several months ago in response to a marked increase in malicious .zip attachments. If necessary, however, quarantined attachments may be retrieved by contacting the Help Desk (x3500, help@c...

Mail from *.top is no longer accepted

IMSS has updated its servers to silently reject mail from the '.top' domain in an effort to reduce the amount of spam we receive. For questions, please contact us (x3500,,

Undeliverable Notifications may be due to Email Spoofing

IMSS has received reports of people receiving bounce-back undeliverable notifications that suggest they sent an email containing malware. Some people have been alarmed because they know they did not send the original malicious message. Most likely, the email address was spoofed, which means a spammer forged the “from" email address to mislead the recipient about the orig...

Check your Junk Mailbox Regularly

IMSS would like to remind you to regularly check your Junk mailbox for messages that may have been incorrectly tagged as Spam. While we do our best to ensure that legitimate messages arrive in your Inbox, the recent increase in malware has resulted in the likelihood of more valid messages ending up in Junk. For questions or concerns, please contact us (x3500,, http...