This is the first post in the series of three blog posts on the AppBrowzer Referral Program.
January 8th, 2019, as I walked into my office, one of the backend engineers told me that some of our servers are down and AppBrowzer App isn’t working. He wasn’t able to figure out the issue. I told him to check the logs in every server and see if he finds anything.
I sat on my desk thinking that this could be one of those crypto-jacking attacks that we had faced a few months ago. To rule that out, I logged into one of our main servers and checked. Thankfully, it wasn’t the case.
In my inbox, there was a flood of emails from our users with the screenshot of our App showing “Unable to connect to server”.
On investigating further, I noticed that we were getting close to 500 requests per second on our web server — which was a lot. I checked if all those requests are coming from same the IP address or a set of IP addresses to rule out any other type of denial of service (DoS) attack. It wasn’t the case.
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