SRE Weekly Issue #264
📖 [The CloudSecList] Issue 81
[tl;dr sec] #77 - Hidden OAuth attack vectors, Networking Fundamentals
AWS WAF now supports Labels to improve rule customization and reporting
AWS Firewall Manager now supports centralized deployment of the new AWS WAF Bot Control across your organization
AWS Firewall Manager now supports centralized management of Amazon Route 53 Resolver DNS Firewall
Announcing AWS WAF Bot Control for visibility and control over common and pervasive bots
7 ways to improve security of your machine learning workflows



Troubleshoot Boot and Networking Issues with New EC2 Serial Console | Amazon Web Services


📈 Networking Fundamentals: From Zero to HTTP
Great intro and overview by @TomNomNom, covering topics like:
* MAC addresses
* ARP
* Hubs, switches
* Subnets, CIDR
* Routing, TCP/IP, DNS
* Load balancers, NAT, etc.
📖 tomnomnom.com/talks/networki…
📺 youtube.com/watch?v=9uebak…



This is big! Using this will mitigate a common exfil path when people attempt to setup isolated networks on AWS or otherwise attempt to restrict network egress.
I described the DNS exfil trick here: summitroute.com/blog/2020/03/3…

The AWS News Blog #AWSNews
aws.amazon.com/blogs/aws/how-…
By: Channy Yun



📚 tl;dr sec 77
* @artsploit New OAuth attacks
* @TomNomNom Networking fundamentals
* @mikepsecuritee Career advice
* @trailofbits Audit of NYT's SecureDrop Workstation
* @DanielMiessler Consumer Authn Strength Maturity Model
tldrsec.com/blog/tldr-sec-…



Just blogged: "Kubernetes Lab on Baremetal" - My personal approach to deploy my own #Kubernetes Lab on baremetal, and on an Intel NUC in particular. marcolancini.it/2021/blog-kube…



"Getting access to an instance’s console is a privileged operation that should be tightly controlled, which is why EC2 Serial Console access is not permitted by default at the account level..."
AWS is learning (how to keep new things disabled by default)!
aws.amazon.com/blogs/aws/trou…



It's good to know that this IAM policy is just as confused as I am.




In case anyone is rolling out AWS Service Control Policies (SCPs) for proactive security guardrails: you gotta have a way to make exceptions. Otherwise you’ll break things.
Try using these condition keys to make exceptions.👇 you’ll roll SCPs out faster

@ben11kehoe @mchancloud 😊 The best ways to make exceptions in AWS SCPs are via these global condition keys:
- aws:PrincipalAccount (account level exceptions)
- aws:PrincipalOrgPaths (environment/OU level exceptions)
- aws:PrincipalArn (user/role level exceptions, but kinda limited b/c no * support)



Helpful recap of AWS Organizations features that have come out in the last ~quarter: aws.amazon.com/blogs/mt/the-l… @AWSIdentity


Practice Cloud Security
Hello folks,
As I continue the journey of learning Cloud Security, I found myself wanting to put what I’ve learned to practice but I’m not sure where to go from here.
Is there a platform (paid or free) that allows you to practice cloud security concepts? For example, if I …
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