Clever Badges makes it easy for K-2 students to log into applications. As with any new feature, we wanted to understand and address any potential security risks before we launched Clever Badges to our users. If we built Clever Badges without thinking deeply about security, it would have been easy to introduce a vulnerability and […]
Always a Student is one of Clever's culture tenets: we love to learn, and this blog is where we share what we learn on topics that matter to engineering, from small but critical technical details to how we organize our engineering teams. This blog is cross-published on Medium.
A few months ago Clever had the opportunity to give a talk to the GoSF Meetup group (the “largest Go meetup group in the world”!). Mohit and Alex discussed their experience creating Sphinx (our rate limiting service) and the usefulness of Go’s interfaces in doing so. Here are the slides: There are a few reasons […]
Sometimes it’s obvious what code has to change, but it’s painfully hard to prove you’ve fixed it. When’s the last time a conceptually simple fix took you hours longer to than planned, because you could not get the project running locally to verify your change worked? I just want to change a little CSS on […]
Back To School is the busiest time for any education company. Students, teachers, schools, software companies, and the rest of the education world are all gearing up for a new school year. Unfortunately, during the most critical time of the year, Clever’s infrastructure was throwing a fit. At the time, Clever was adding over a […]
CVE-2014-6271 and CVE-2014-7169, also known as “Shellshock”, are high impact vulnerabilities affecting the Born Again Shell (BASH). The vulnerability allows an attacker to trick Bash into running arbitrary commands which could result in unauthorized disclosure of information, unauthorized modification and disruption of service. Because this is such a big threat, and because at Clever we […]
At Clever we help 1 in 6 schools in the country sync data on an hourly basis from their student information systems (SISes) to the ed tech apps that their teachers and students use. These 20,000 schools sync about 50 GB of data in aggregate – that’s over a terabyte of data per day. While […]
At Clever we’re building a way for students and teachers to start using learning applications with a click of a button. This is incredibly difficult to do in a school environment, because existing infrastructure is typically incompatible with a world where students use software on the internet. The backbone of the infrastructure at most schools […]