04/06/2026
🕵️♂️ Agent Foskett’s Friday Cyber Briefing
“The timeline told the story…”
“…because the logs already knew.”
👉 Sign in at 08:12
👉 Privilege escalation at 08:24
👉 Data access at 08:27
👉 Lateral movement at 08:31
☕ Individually, each event looked normal.
Together, they revealed the entire attack path.
🔍 What we found:
• Successful sign-in activity
• Privilege changes shortly afterwards
• Sensitive data access
• Follow-on device and network activity
• Events spread across multiple Microsoft security tables
Nothing screamed "incident."
In fact, the dashboard was greener than a frog in a lettuce factory.
But together... the timeline changed everything.
🧠 So we didn't trust one alert. We built the timeline.
Even simple investigation pivots can expose the story:
IdentityLogonEvents
| where Timestamp > ago(24h)
| project Timestamp,
AccountUpn,
IPAddress,
DeviceName,
ActionType
| order by Timestamp asc
👉 Sometimes the evidence isn't missing.
It's simply scattered across different tables, devices and timestamps.
💥 What this kind of activity can indicate:
• Account compromise
• Privilege escalation
• Suspicious data access
• Lateral movement
• Post-authentication attacker activity
• Hidden relationships between seemingly unrelated events
No single event told the full story.
The timeline did.
🔐 The takeaway:
"The event looked normal..."
"...until the next event explained it."
👉 Modern investigations are not just about alerts.
They are about connecting behaviour across time.
🧭 Built on:
Microsoft Defender XDR | Microsoft Sentinel | Microsoft Entra ID | KQL
🕵️♂️ Agent Foskett's note:
The sign-in looked normal.
The data access looked normal.
The lateral movement looked normal.
The timeline didn't.
And that's why attackers hate timestamps.
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