diff --git a/README.md b/README.md
index 7a94ce4..3b87230 100644
--- a/README.md
+++ b/README.md
@@ -227,7 +227,6 @@ An updated and organized reading list for illustrating the patterns of scalable,
 	* [Data Pipeline Monitoring System at LinkedIn](https://engineering.linkedin.com/blog/2019/an-inside-look-at-linkedins-data-pipeline-monitoring-system-)
 	* [Monitoring and Observability at Picnic](https://blog.picnic.nl/monitoring-and-observability-at-picnic-684cefd845c4)
 * [Distributed Security](https://msdn.microsoft.com/en-us/library/cc767123.aspx)
-	* [Approach to Security at Scale at Dropbox](https://blogs.dropbox.com/tech/2018/02/security-at-scale-the-dropbox-approach/)
 	* [Aardvark and Repokid: AWS Least Privilege for Distributed, High-Velocity Development at Netflix](https://medium.com/netflix-techblog/introducing-aardvark-and-repokid-53b081bf3a7e)	
 	* [LISA: Distributed Firewall at LinkedIn](https://www.slideshare.net/MikeSvoboda/2017-lisa-linkedins-distributed-firewall-dfw)
 	* [Secure Infrastructure To Store Bitcoin In The Cloud at Coinbase](https://engineering.coinbase.com/how-coinbase-builds-secure-infrastructure-to-store-bitcoin-in-the-cloud-30a6504e40ba)
@@ -237,7 +236,6 @@ An updated and organized reading list for illustrating the patterns of scalable,
 	* [Active Directory Password Blacklisting at Yelp](https://engineeringblog.yelp.com/2018/04/ad-password-blacklisting.html)	
 	* [Syscall Auditing at Scale at Slack](https://slack.engineering/syscall-auditing-at-scale-e6a3ca8ac1b8)
 	* [Athenz: Fine-Grained, Role-Based Access Control at Yahoo](https://yahooeng.tumblr.com/post/160481899076/open-sourcing-athenz-fine-grained-role-based)
-	* [WebAuthn Support for Secure Sign In at Dropbox](https://blogs.dropbox.com/tech/2018/05/introducing-webauthn-support-for-secure-dropbox-sign-in/)
 	* [Security Development Lifecycle at Slack](https://slack.engineering/moving-fast-and-securing-things-540e6c5ae58a)
 	* [Unprivileged Container Builds at Kinvolk](https://kinvolk.io/blog/2018/04/towards-unprivileged-container-builds/)
 	* [Diffy: Differencing Engine for Digital Forensics in the Cloud at Netflix](https://medium.com/netflix-techblog/netflix-sirt-releases-diffy-a-differencing-engine-for-digital-forensics-in-the-cloud-37b71abd2698)
@@ -252,7 +250,7 @@ An updated and organized reading list for illustrating the patterns of scalable,
 	* [Improving Web Vulnerability Management through Automation at Lyft](https://eng.lyft.com/improving-web-vulnerability-management-through-automation-2631570d8415)
 	* [Clock Skew when Syncing Password Payloads at Drobbox](https://dropbox.tech/application/dropbox-passwords-clock-skew-payload-sync-merge)
 * [Distributed Messaging, Queuing, and Event Streaming](https://arxiv.org/pdf/1704.00411.pdf)
-	* [Cape: Event Stream Processing Framework at Dropbox](https://blogs.dropbox.com/tech/2017/05/introducing-cape/)
+	* [Cape: Event Stream Processing Framework at Dropbox](https://dropbox.tech/infrastructure/introducing-cape)
 	* [Brooklin: Distributed Service for Near Real-Time Data Streaming at LinkedIn](https://engineering.linkedin.com/blog/2019/brooklin-open-source)
 	* [Samza: Stream Processing System for Latency Insighs at LinkedIn](https://engineering.linkedin.com/blog/2018/04/samza-aeon--latency-insights-for-asynchronous-one-way-flows)	
 	* [Bullet: Forward-Looking Query Engine for Streaming Data at Yahoo](https://yahooeng.tumblr.com/post/161855616651/open-sourcing-bullet-yahoos-forward-looking)