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Over the last several hours, classic measurements’ results (HTTP, HTTPS, DNS, FTP) intermittently fail to be stored in some customers’ accounts. This leads to missing results and alerts –  at least until a next measurement is able to properly register a result. A quick fix is in place already, and we’re working on a full

An unhandled database exception caused the alerting service to stop.  It took years before this issue surfaced, and today was the day. The issue has been resolved and alerting works fine again. Clearly, alerting is one of the key features of AlertFox so this issue is embarrassing and we will make sure it does not happen

Starting next week, we will update our classic sensors’ back-end architecture to match our transaction (iMacros) sensors. Besides improved scalability and performance, this will allow for future feature extensions (like additional monitoring locations).

No action is required from our customers.

When we announced a back-end change to our HAR engine, we told you that clear-text HAR files for SSL connections were a possible future extension. Today we’re happy to tell you that we will be rolling out exactly this feature within the next weeks and across all regions. Just as with HTTP connections today, your

2015-04-01 iDrone Back-end Update

Tuesday, 31 March 2015 by

On Wednesday, April 1st, 2015, we will update our iDrone back-end. The change is expected to be completely transparent.   [Update] The operation went smoothly. Let us know in case you encounter any problem.

Backend Update: New SMS Provider

Friday, 13 March 2015 by

After receiving reports about missing or heavily delayed SMS notifications, our team has changed the SMS provider for the AlertFox backend. Our new provider has a reputation for top notch reliability and allows for future extensions of our alerting features (e.g. phone alerts). Note that the notification SMS’s sender ID (+1 781-209-6001) will differ from

New Upload Files Feature

Monday, 02 March 2015 by

The new Upload Files functionality enables you to upload arbitrary files to your AlertFox account, with the exception of executable files such as .exe, .vbs, .bat, etc. In addition to uploading images for the iMacros Image Recognition technology, you can now upload other file types, e.g. pdf, csv, xls, doc, for use by your sensors.

Backend Update: Waterfall/HAR Generation

Tuesday, 27 January 2015 by

Starting this week, we’ll be updating our measurement server software stack wrt. the creation of waterfall diagrams (HAR files).

tl;dr: We’ll transparently switch to a new Waterfall/HAR generating software component. No actions are required from our users.

We have had an outage for classic measurements that are assigned to the “World” zone. Non-classic and classic sensors assigned to either US or EU or AP were not affected (cf. below).   The problem has been identified and new results are expected to come in, soon.

Measurement Server Update: Firefox

Wednesday, 26 November 2014 by

Starting today, we will update our measurement servers’ software stack to feature Firefox 33.1.1 and iMacros for Firefox 8.8.7 (as available on This update is transparent and does not require users to take any further action.