Tag: Security

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Tendenci Open Source Is Written in Python, Not PHP

Dear Community,

A quick reassurance: Tendenci is built with Python and Django, so the PHP-specific vulnerabilities announced on October 21, 2026, do not directly affect the Tendenci application.

Our team stays attentive to security updates and keeps our community informed. You can follow our development and published fixes on GitHub – that’s the beauty of open source!

Thank you for your trust and for being part of the Tendenci community.

The TendenciDEV Team

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Security in the Tendenci SaaS Cloud at AWS

Kibana OSSEC Tendenci

Cyber Security is based on Prevention, Monitoring, and Incident Response

Associations are part of the fabric of society. We take it seriously. And we also understand there are no “perfect” or “completely secure” systems. Not even air-gapped.

To guard our SaaS AMS clients’s sites we use redundant systems. These include SSL encryption, application isolation, containers, layers of AWS (Amazon Web Services) VPC, Security Groups, ACLs, Route53 DNS, custom AMIs, virus scanners, malware scanners, pentesting, auditing and more. All of these activities generate redundant logs which need to be monitored. To do that we run what is called the “ELK Stack” or now the “Elastic Stack“.

Network Monitoring with OSSEC Logstash ElasticSearch and Kibana

Cyber Security starts with Project Management

A Cyber PM, upon initial completion, never ends. It requires constant vigilance. The process of Cyber Security can be further explained as:

  1. Architecture – Start with Security In Mind
  2. Passive Cyber Defense – Systems that are in place
  3. Active Cyber Defense
  4. Cyber Intelligence Gathering
  5. Response

** Note: There is a longer explanation on our site at https://www.tendenci.com/security/

There are many resources available for cyber security training. We encourage you to look them up and take an active role in keeping your web site, company, family and country secure from cyber attacks!

For the expanded full version of the basics of cyber security in the Tendenci SaaS cloud, view at https://www.tendenci.com/security

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What a DDoS attack to an Association Looks Like

The following graphs show what a Distributed Denial of Service (DDoS) attack on an association looks like. The names, rates and volume of the association have been blurred for security reasons. We are thankful to AWS for their own defenses in front of ours, which  help us mitigate these issues.

responding to ddos attacks as best we can
active response to mitigate attacks

Note: The  graphic above, is filtered for a 24 hour span for one client. The infrastructure is in place, and highly redundant, so we can monitor and keep our clients safe. For clients in the US or hosted in other countries (we have multiple Tendenci clouds as needed.)

Note 2: Make no mistake – If a bad-actor has the budget – they can and will purchase enough bots to take a site down. This is well documented. Even our resources at AWS are limited in what they can handle. Budget (yes BUDGET) accordingly.