Home Cybersecurity Essentials
Protect your devices, accounts, Wi-Fi, and family with a simple defense checklist.
Start the checklist →Learning paths
Security knowledge you can use today.
Start with a clear path, build confidence in minutes, and turn cyber awareness into practical action.
Scam & Phishing Defense
Recognize manipulative messages and tech-support scams before they become costly problems.
Learn the warning signs →Small Business Cyber Readiness
Build a practical security baseline for your team, customer data, and everyday operations.
Explore Rahvion services →Microsoft 365 knowledge center
A complete cheat sheet, made readable.
Use the friendly track for everyday guidance or switch to the technical track for administration, security, and governance essentials.
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Microsoft 365 connects productivity apps, identity, collaboration, device management, security, and compliance. Start at your comfort level and return whenever you need a quick answer.
1. Start with the core apps
Use Outlook for email and calendar, Teams for chat and meetings, OneDrive for your files, and SharePoint for team resources. Word, Excel, PowerPoint, and OneNote cover everyday work.
2. Protect your account
Turn on multi-factor authentication. Use a unique password and never approve an unexpected sign-in prompt. Review unfamiliar login alerts immediately.
3. Store files safely
Save personal work files in OneDrive. Use SharePoint or Teams for shared team files. Check the sharing audience before sending a link and avoid public links unless truly needed.
4. Collaborate in Teams
Use channels for ongoing projects, chats for quick conversations, and meeting links for scheduled sessions. Review the participant list before sharing sensitive information.
5. Watch for suspicious email
Pause before opening unexpected links or attachments. Verify requests for payments, passwords, or sign-ins using a separate trusted contact method.
6. Recover calmly
If a file is missing, check the OneDrive recycle bin and version history. If your account is locked or you see repeated MFA prompts, contact your administrator or Rahvion support.
Identity: Microsoft Entra ID
- Use single sign-on and MFA.
- Review risky sign-ins and conditional access.
- Use role-based administration and least privilege.
Exchange Online
- Manage mailboxes, aliases, connectors, and transport rules.
- Review anti-spam, anti-phishing, and retention settings.
- Audit suspicious forwarding rules.
SharePoint and OneDrive
- Control external sharing and site permissions.
- Review storage, retention, sync health, and version history.
- Use sensitivity labels where appropriate.
Teams administration
- Review meeting, messaging, and application policies.
- Manage guests and external access deliberately.
- Check service health before local troubleshooting.
Intune endpoint management
- Enroll devices and enforce compliance baselines.
- Use configuration profiles and application deployment.
- Review update rings and remote actions carefully.
Defender and Purview
- Review incidents, alerts, endpoint risk, and secure score.
- Use audit search, retention, DLP, and sensitivity labels.
- Test policies before broad enforcement.
Technical takeaway: Microsoft 365 is an identity-first cloud platform. Start with MFA, least privilege, secure sharing, endpoint compliance, monitoring, backups, and regular access reviews.
Official CISA data
Live threat intelligence.
Track the newest additions to CISA's Known Exploited Vulnerabilities catalog. Search by CVE, product, or vendor.
Mirasvit Full Page Cache Warmer Deserialization of Untrusted Data VulnerabilityMirasvit · Mirasvit Full Page Cache Warmer
2026-06-03
Linux Kernel Improper Authentication VulnerabilityLinux · Kernel
2026-06-02
Android Framework Integer Overflow VulnerabilityAndroid · Framework
2026-06-02
Oracle WebLogic Server Unspecified VulnerabilityOracle · WebLogic Server
2026-06-01
Palo Alto Networks PAN-OS Authentication Bypass VulnerabilityPalo Alto Networks · PAN-OS
2026-05-29
Nx Console Embedded Malicious Code VulnerabilityNx · Nx Console
2026-05-27
TanStack Unspecified VulnerabilityTanStack · TanStack
2026-05-27
Daemon Tools Lite Embedded Malicious Code VulnerabilityDaemon · Daemon Tools Lite
2026-05-27
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Practical resources
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