On 25th February 2019 at 08:52 CET / 02:52 EST, our engineers identified an issue which was causing location information and IP address exclusion to be incorrect in some cases. The issue began on the 21st of February 2019 at 16:15 CET / 10:15 EST.
Why did this issue occur?
This issue occurred due to a fix to make our IP address handling even more private and secure that was deployed on Thursday evening and had unintended side effects.
What effect did this issue have on my site?
This issue did not have any effect on your site.
What effect did this issue have on my data?
From Thursday evening to this evening (the following Monday), you might have noticed that you have some responses and recordings that report as being from strange locations, or that IP addresses you've previously set to exclude from results are re-included.
Unfortunately, due to the fact that we do not store any IP addresses, we cannot retroactively fix the affected recordings.
What will we do to prevent this from happening in the future?
As part of the fix for this issue we implemented changes that will stop this happening again. On a higher level, our medium-term roadmap for Hotjar includes rewriting our data ingestion layer completely, further eliminating problems like these.