Cyber Security
6 min readNew
Citrix Bleed 2 (CVE-2025-5777) and the NetScaler flaws that followed
What Citrix Bleed 2 leaked, which NetScaler builds fix it and the 2025 and 2026 flaws after it, and why you must kill sessions after patching.
Insights
Practical guides on managed IT, Microsoft 365, cyber security and AI, from the Geidi team.
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Showing all 10 articles
- Cyber Security
6 min readNew
Citrix Bleed 2 (CVE-2025-5777) and the NetScaler flaws that followed
What Citrix Bleed 2 leaked, which NetScaler builds fix it and the 2025 and 2026 flaws after it, and why you must kill sessions after patching.
- Managed IT & Support
6 min read
Windows 10 end of support: what to do a year later
Windows 10 support ended in October 2025. What Extended Security Updates cover and cost, what unsupported means, and whether to upgrade or replace.
- Cyber Security
5 min read
Business email compromise and fake invoice fraud in Australia
How changed bank details and fake invoice emails trick Australian businesses into paying criminals, and the checks that stop the money leaving.
- Cyber Security
6 min read
ClickFix: the fake "verify you are human" page that installs malware
How ClickFix fake CAPTCHA pages trick staff into running malware themselves, and the Windows and Microsoft 365 settings that stop it.
- Cloud & Business Systems
5 min read
SPF, DKIM and DMARC explained, and how to get to reject safely
What SPF, DKIM and DMARC do, why Gmail, Yahoo and Outlook now insist on them, and a safe path to a DMARC reject policy in Microsoft 365.
- Cyber Security
6 min read
The Essential Eight maturity levels, in plain English
What the Essential Eight is, what maturity levels zero to three mean, which level suits your organisation, and a practical way to reach level one.
- Managed IT & Support
5 min read
Backups that survive ransomware: immutable, offline and tested
Ransomware goes after backups first. How 3-2-1-1-0, immutable copies, separate credentials and restore tests keep yours usable, and the Essential Eight link.
- AI & Automation
5 min read
Is your business ready for AI? Four questions to ask first
Before buying AI tools, check four things: your information, your permissions, the process you want to improve and who owns the result.
- Cloud & Business Systems
7 min read
Microsoft 365 licensing, explained for growing businesses
Business Basic, Standard, Premium or E3? A plain-English guide to Microsoft 365 licences in 2026, where Copilot fits, and the mistakes that waste money.
- Cyber Security
6 min read
Notifiable data breaches: what Australian businesses must do
Who the Notifiable Data Breaches scheme covers, what counts as an eligible data breach, the 30 day assessment, and the Privacy Act changes to know.
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