Perimeter Brief — 5 stories. Every morning. No noise.

Cybersecurity digest

SIGNAL,
not
NOISE.

5 curated stories, every day. Threats, patches, and breaches filtered from 12+ sources — with a straight take on what you need to do about them. Every story becomes a trackable ticket in your security dashboard. No vendor fluff. No recycled press releases.

// Sources include: CISA KEV  ·  NVD  ·  Bleeping Computer  ·  Krebs on Security  ·  The Hacker News  ·  SANS ISC  ·  Recorded Future  ·  Threatpost  ·  Dark Reading  ·  vendor advisories & more

5
Stories/day
12+
Sources
3min
Read time
0
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// Who it's for
⚙
The Security-Conscious IT Pro
You run infrastructure, not a threat-intel team. Perimeter Brief tells you which CVEs actually need your attention — and which ones you can safely ignore today.
◎
The IT Manager with Security Accountability
You need situational awareness without it becoming a second job. Five minutes every morning keeps you current without pulling you out of your workflow.
⬡
The Small SOC or Engineering Team
Professional-grade threat signal and a shared ticket board — without an enterprise contract or a six-month onboarding process.
// How it works
01
Monitor
Every morning we pull from CISA KEV, NVD, Bleeping Computer, Krebs, SANS ISC, Recorded Future, and more. Every source, every day.
02
Filter
One question drives every editorial decision: does this change what you need to do today? Stories that don't clear that bar don't make the brief.
03
Deliver
Your brief lands by 6am with a clear action for each story. Every actionable item becomes a ticket in your security dashboard automatically.

Today's Issue

// SAMPLE — UPDATED DAILY
// Editor's take

Three breach disclosures this week share one uncomfortable root cause: MFA bypass via session token theft. Attackers stopped caring about the login screen two years ago. If your org treats "MFA enabled" as a checkbox rather than a starting point, today's stories are a preview of your next incident report. Watch how CrowdStrike's detection guidance evolves on this — they're usually 60 days ahead of everyone else.

CISA KEV
CISA Adds Cisco SD-WAN Auth Bypass to Known Exploited Catalog
CVE-2026-20133 added after confirmed in-the-wild exploitation. Federal agencies have until May 6 to patch. Enterprise exposure is wide — SD-WAN Manager is broadly deployed in mid-market and up.
Action requiredPatch Cisco SD-WAN Manager immediately per cisco-sa-sdwan-authbp. Discontinue use if patch unavailable before deadline.
The Record
BlackCat Insider Negotiator Pleads Guilty to Federal Ransomware Charges
A Florida man admitted acting as a ransomware negotiator for BlackCat/ALPHV while posing as a legitimate IR consultant. First conviction of an "insider negotiator" — a gap most IR playbooks haven't accounted for.
SecurityWeek
CrowdStrike Patches Critical LogScale Flaw; Tenable Fixes High-Severity Nessus Bug
Two of the most privileged tools in enterprise security issued patches the same week. Both have read access to production environments. Accelerate your patch cycle on these specifically.
Action requiredPatch CrowdStrike LogScale and Tenable Nessus this week. These tools sit inside your perimeter with elevated credentials.

Paid tier

The digest is the starting point.
The dashboard is where you act.

Paid subscribers get a private security operations dashboard. Every actionable item from the daily brief becomes a trackable ticket — with priority, status, CVE tagging, and resolution tracking built in.

Features by role: Analyst + Admin Admin only
◼ Analyst + Admin
Kanban Board
Track every security ticket across Open, In Progress, and Resolved columns. Analysts see their assigned work; admins see the full team board.
☰ Analyst + Admin
Ticket List & Filters
Filter by status, priority, category, CVE, or assignee. Sort by any column. Export visible tickets to CSV for reporting or audit handoff.
⚡ Admin only
Digest → Ticket in one click
Action items and CISA KEV alerts from each brief automatically surface as suggested tickets in the From Digest view. Promote them to your board instantly.
⚠ Analyst + Admin
CVE & Tag Tracking
Tag tickets with CVE IDs. Filter your board by CVE, search across all tracked vulnerabilities, and link directly to NVD entries.
◎ Analyst + Admin
Resolution Workflow
Closing a ticket requires documented resolution details — creating an automatic audit trail of every remediation your team completes.
◈ Analyst + Admin
Reports & Metrics
Status distribution, priority breakdown, mean time to resolve, weekly trends, and top CVEs — printable in one click.
⊞ Admin only
Team & Seat Management
Invite analysts, manage seat allocation, revoke or restore access, and configure SLA policies per priority level — all from the Admin panel.
✉ Admin only
Email & Org Settings
Configure inbound email-to-ticket routing, auto-reply templates, suppression lists, and per-org domain settings from a single admin pane.
PERIMETER.BRIEF
Board
All Tickets
From Digest
Reports
Admin
Profile
M.Ellery@
PERIMETER.BRIEF
Board
All Tickets
From Digest
Reports
Admin
Profile
M.Ellery@
PERIMETER.BRIEF
Board
All Tickets
From Digest
Reports
Admin
Profile
M.Ellery@ Sign out
7
Open
3
In Progress
12
Resolved
2
Critical
1
Overdue
○ Open  7
Critical
LiteLLM pre-auth SQLi actively exploited
FROM DIGEST
High
Rotate API keys — GitHub RCE via git push
CVE-2026-3201
Medium
Q2 vendor access review — 14 accounts pending
◑ In Progress  3
High
Patch CrowdStrike LogScale — credential exposure
FROM DIGEST
Medium
MFA enforcement rollout — 3 depts remaining
Medium
Nessus scan coverage gap — 4 subnets excluded
● Resolved  12
Resolved
Cisco SD-WAN Manager patched per KEV deadline
CVE-2026-20133
Resolved
Session token hygiene audit — 8 accounts rotated
Resolved
Legacy VPN client sunset — all users migrated
Get full ops access with paid → Daily brief · Dashboard · Reports · CVE tracking  ·  from $19.99/mo
01
Curated, not aggregated
We monitor CISA KEV, NVD, Bleeping Computer, Krebs, SANS ISC, The Hacker News, and more — then surface only the 5 stories that change what you should do today. An editor makes the call, not a keyword filter.
02
Actionable by default
Every story that needs a response gets a clear action line. Stories without one don't get a fake one padded in. No filler.
03
KEV-aware daily
CISA's Known Exploited Vulnerabilities catalog is checked every morning. If something was exploited in the wild yesterday, it's in your inbox by 6am.
04
Zero vendor content
No sponsored stories. No affiliate links. No "partner content." Subscriber revenue is the only business model — so we work for you.
// About the Editor

Perimeter Brief is curated by a Senior IT professional with 20+ years of hands-on experience across application security, infrastructure, and vulnerability management — someone who got tired of security news written for vendors, not operators. Every story is evaluated on one question: does this change what I need to do today?

Written by a practitioner, for practitioners.
// Frequently asked questions
How is this different from just reading Bleeping Computer or Krebs myself?
You could — but you'd spend 40 minutes doing what Perimeter Brief does in 5. We read all of it daily so you don't have to, filter out anything that doesn't require operational action, and tell you exactly what to do about the things that do. It's the difference between raw news and a filtered briefing written for someone running real systems.
What if I miss a day?
No catch-up stress. Every issue stays in your archive, and every actionable story creates a ticket in your dashboard automatically. You can come back to it a week later and the context is still there — assigned, prioritised, and waiting. Nothing gets lost just because you were busy.
How does the ticket dashboard actually work?
Every story that warrants action auto-creates a ticket in your personal security board. You can set priority, assign it, add notes, track remediation progress, and mark it resolved. It's a lightweight SOC tracker built around the digest — not a generic task manager you have to configure from scratch. Try the sandbox to see it live.
Is there really a free tier, or is it a trial?
It's a real free tier, not a trial. You get 3 of 5 stories delivered once a week — no card required, no time limit. It's enough to judge the curation quality before you decide whether the full daily brief is worth it. You won't be auto-upgraded.
Can I cancel anytime?
Yes. No lock-in, no cancellation fees, no questions asked. Cancel from your account profile with one click — your subscription ends at the close of the current billing period and you keep access until then.
Do I need a security background to get value from this?
No. Perimeter Brief is written for IT professionals who are security-conscious, not dedicated SOC analysts. If you manage or operate infrastructure, you're the target audience. The editorial lens is always: what does this mean for someone actually running systems?

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