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Home Archives for cybersecurity and cyber warfare
SELinux security contexts: correcting SELinux labels on a file system

Filipe Martins 2022-03-21 2 Comments

SELinux security contexts: correcting SELinux labels on a file system

SELinux can be such a nuisance. In particular, if you have a newly created file system, you will need to add labels to it, also known as SELinux security contexts.

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Filed Under: Linux, NGINX, SELinux, Uncategorized Tagged With: cyber security, SELinux

Log4j RCE and mitigation techniques

Cloud Insidr 2021-12-21 Leave a Comment

Log4j RCE and mitigation techniques

For quite some time it seemed as if cyber vulnerabilities in the Java ecosystem would be losing ground. Instead, it was the calm before the storm: a vulnerability in the Log4j library threatens web servers and other applications in a variety of ways.

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Filed Under: Java, Uncategorized Tagged With: Five Eyes Alliance, Java, Log4j, RCE

Fixing your Web Server’s Security Headers: From Hall of Shame to Hall of Fame

Cloud Insidr 2020-12-04 4 Comments

Fixing your Web Server’s Security Headers: From Hall of Shame to Hall of Fame

[Updated 2020-12-04] This post explains how to set up robust security headers in NGINX to protect your web application from malicious payloads and other forms of attacks. Choose your HTTP(S) headers wisely.

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Filed Under: cloud, edge and everything in between, cybersecurity and cyber warfare, encryption, NGINX, Uncategorized, web servers in the cloud Tagged With: clickjacking, CSRF, HPKP, HSTS, MITM, x509, XSS

Cannot sign in to AWS as IAM user with MFA? How to resync your MFA token generator

Cloud Insidr 2020-11-15 1 Comment

Cannot sign in to AWS as IAM user with MFA? How to resync your MFA token generator

Problems signing in to AWS? When the login page “Sign in as IAM user” repeatedly says: “Your authentication information is incorrect. Please try again” though you entered correct information, your Gemalto token generator for MFA authentication could be out of sync.

Sign in as IAM user: Your authentication information is incorrect
Sign in as IAM user: Your authentication information is incorrect

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Filed Under: AWS, cybersecurity and cyber warfare Tagged With: AWS, Gemalto, IAM, MFA

Letsencrypt tips and tricks

Cloud Insidr 2019-07-22 2 Comments

Letsencrypt tips and tricks

Who wants to issue certificates manually if they can take Letsencrypt’s Certbot to the task.

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Filed Under: cybersecurity and cyber warfare, encryption, NGINX, web servers in the cloud Tagged With: certbot, certificate, letsencrypt

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Tag Cloud

AWS AWS EBS clickjacking CSRF cyber security EBS EC2 Five Eyes Alliance Gemalto HPKP HSTS IAM Java Linux log Log4j logs MFA MITM NGINX NVMe PHP RCE Route 53 SELinux SQL x509 XSS

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