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SIEM & Detections

Detections that don’t pile up. They open a case the analyst works.

Most security teams are not short on alerts. They are short on time to investigate them. A classic SIEM generates signal all day and leaves the hard part — deciding what is real and what to do — entirely to you. 24Observe detects the threat and then investigates it: every detection becomes an incident, and an analyst returns a verdict with the evidence. Detection and investigation, finally in one place.

87 detections 14 packs Multi-event correlation Threat intel at ingest
app.24observe.com/detections
Live detections
14 packs · enabled
Authentication brute-force
T1110→ incident #2471
HIGH
Credentials in a request URL
T1552→ incident #2470
CRIT
Prompt injection · agent tool loop
AI-agent pack→ analyst triaging
HIGH
SSH key added to a host
T1098.004persistence
MED
Every match opens an incident — and the analyst investigates it
The SIEM problem

A SIEM that only detects is half a product.

The dirty secret of the security-information-and-event-management market is that the alert was never the hard part. Finding out whether an alert matters is.

Buy a traditional SIEM and you get a powerful detection engine that will happily produce thousands of alerts a day. What you do not get is anyone to work them. So they queue. Analysts cherry-pick the scary-looking ones, ignore the rest, and quietly tune down anything noisy until the dashboard is calm again — which is exactly how real intrusions slip through a fully-deployed SIEM. The tool did its job. The job it did just was not the one that protects you.

The investigation is where the cost lives. For every alert worth a second look, someone has to pull the related events, line up the timestamps, check the source against threat intelligence, see whether a failed-login burst was followed by a success, figure out which account and which host are involved, and decide if this is an attacker or a misconfigured cron job. That is twenty minutes of skilled work per alert, on a good day, and there are never enough skilled people or enough good days.

24Observe was built around the belief that detection and investigation are one product, not two. The detections are excellent — but their job is to open an incident, and the moment they do, the analyst goes to work: gathering the evidence, tracing the blast radius, and returning a verdict a human can act on or audit. You stop drowning in alerts and start reading conclusions.

There is a quiet second benefit to this design. When investigation is automatic and consistent, the temptation to tune detections down into silence disappears. Teams mute noisy rules because every alert costs them time they do not have; remove that cost and you can afford to keep coverage broad and sensitive. A detection that fires a little too often is no longer a burden to be silenced — it is just a few extra incidents the analyst dispositions in seconds, most of them closed as benign before a human ever looks. Detection coverage and analyst sanity stop being a trade-off, which is the trade-off that quietly hollows out most SIEM deployments within a year of go-live.

A SIEM that hands you ten thousand alerts has not reduced your work — it has relocated it. We do the investigation, not just the detection.
The content

Eighty-seven detections, fourteen packs, on by intention.

Prebuilt detections are starting points you can trust and then tune — not a marketing number. Each pack groups a real attacker behaviour or operational failure, and most rules map to a recognised attack technique so they slot straight into how your team already thinks.

Access & identity

Brute-force, password spray, account lockouts, multi-factor disabled, new privileged accounts — the front door of almost every breach.

Data exfiltration

Bulk export, unusually large outbound transfers, database dumps, and data leaving over unexpected channels — the moment information starts walking out the door.

Secret exposure

Credentials, keys, and tokens leaking into logs, URLs, or request bodies — the leaks attackers harvest first.

Web attacks

Injection, traversal, and scanning against your applications, surfaced from the events your edge already produces.

Threat intelligence

Known-bad addresses, anonymising networks, and listed indicators matched the instant an event arrives.

AI-agent security

Prompt injection, runaway tool loops, token and cost abuse, sensitive tool use, and tool-protocol manipulation.

Cloud control-plane

Root usage, key creation, audit-trail tampering, and console abuse in your cloud accounts.

Linux host security

New users, privilege escalation, persistence via scheduled tasks and SSH keys, reverse shells, and recon on your hosts.

Infrastructure & network

Memory exhaustion, disk-full, kernel faults, service crash loops, and interface or routing failures across your estate.

Reliability

Fatal errors and error-rate spikes — the operational signals that sit right next to security ones.

Beyond single events

Correlation, intelligence, and context — built in, not bolted on.

Write a detection in one readable line

Detections use the same readable query language as your everyday search — no proprietary scripting dialect to certify in. A rule is a query, a window, a threshold, a severity, and an attack-technique tag. When it matches, it opens an incident through the same pipeline and routing as everything else. Authoring a new detection is a one-line change a responder can make between calls, not a project.

Multi-event correlation

Some attacks are invisible in any single event and obvious across several. The platform detects sequences — a wall of failed logins then a success for the same account — and cardinality patterns — one source touching ten distinct accounts, the fingerprint of a spray or enumeration sweep. These higher-order detections open incidents the analyst investigates exactly like the rest.

Threat intelligence at the moment of ingest

Every public address in an incoming event is checked against threat intelligence as it lands — known-bad indicators, anonymising and datacenter networks, and listings — and flagged inline. Bring your own private indicators too: addresses, domains, and file fingerprints, scoped to your organisation. A match is both a one-line detection and a powerful corroborating signal the analyst weighs in its verdict.

Enrichment that makes a search a sentence

Source addresses resolve to geography and network owner inline. Your own directory of identities and assets stamps risk and criticality onto matching events. So "a failure on a critical asset, from a high-risk source, outside business hours" becomes a single readable query instead of a join across three different tools.

The differentiator

Detection is the start of the story. The analyst writes the rest.

This is what separates 24Observe from a detection engine with a dashboard. The instant a detection fires, the analyst investigates — and you get a verdict, not a row in a queue.

It opens
A detection match opens an incident — the same first-class incident a failed check or a metric breach would.
It links
The incident is wired to the identities, hosts, and assets it implicates, so the blast radius is visible immediately.
It investigates
The analyst corroborates the signal across independent indicators and returns a verdict with cited evidence.
It groups
Related incidents sharing one root collapse into a single case — one event never pages you fifty times.
It routes
A signed webhook carries every detection to your own tooling and SOAR; a gap-free export feeds any downstream SIEM.
It learns
Your analysts’ corrections feed back, so verdicts align to how your team triages over time.
A worked example

From signal to closed case, step by step.

Abstract claims are easy. Here is the concrete path a single detection travels — the same path every one of them follows, every time, without a human kicking it off.

A burst of failed logins hits one of your services. The access-and-identity pack has a brute-force detection watching exactly this, and the moment the count crosses its window threshold it does what every detection does: it opens an incident. Not a line in a log, not a muted notification — a first-class incident, the same kind a failed health check or a saturated host would open, carrying the rule’s severity and its attack-technique tag.

Because the incident is wired into the live map of your environment as it opens, the affected account, the source address, and the host behind the service are already attached. There is no "now go figure out what this touches" step — the blast radius is part of the incident from the first second. That wiring is also what lets the investigation start instantly instead of from a cold search.

Now the analyst goes to work. It does not take the failed-login spike at face value — a spike alone is often a misconfigured client or a forgotten cron job, not an attack. It corroborates. Was there a successful login for that account immediately after the wall of failures? Is the source address flagged by threat intelligence, or coming from an anonymising network? Is the geography impossible for this user? Has this account touched anything sensitive since? Each question is answered by a read-only tool against your real telemetry, and each answer is recorded as a citation.

The verdict that comes back is a decision, not a description. If the evidence converges — failures, then a success, from a flagged source, in an impossible location — it is a confident true positive, with every supporting record linked so a human can verify the call in seconds rather than reconstruct it over twenty minutes. If the evidence is thin or contradictory, the analyst says so and routes it to a person instead of crying wolf. Either way, the recommended next action — block the source, force a password reset, isolate the host — is proposed for a human to approve, never executed automatically.

Suppose the same intrusion tripped five detections at once across a few services. Rather than paging you five times, the platform recognises that they share a root and collapses them into a single case, so you investigate the incident, not the echoes. And when your analyst reviews the verdict and corrects it — confirms it, downgrades it, adds a note — that correction is captured and feeds future investigations, so the system gets measurably better at reading your environment over time.

Finally, none of this traps you inside 24Observe. The detection fires a signed webhook to your own tooling and SOAR the instant it matches, and a gap-free export streams your audit trail for any downstream system to consume. You can run 24Observe as your detection-and-investigation brain and still feed every other tool you own. The point was never to lock the data in — it was to make sure no detection ever again dies unread in a queue.

The honest comparison

Legacy SIEM vs a SIEM that investigates.

The job
Legacy SIEM
24Observe
After a detection fires
An alert in a queue, for a human to work.
An incident, already investigated by the analyst.
Authoring a rule
A proprietary query dialect and a steep learning curve.
One readable line over your events.
AI-agent threats
Not covered.
A dedicated detection pack.
Pricing model
A security tier plus a per-gigabyte intelligence meter.
Part of the platform, not a second product.
Alert floods
Fifty alerts for one root cause.
One case, root grouped, one notification.
Questions, answered

SIEM & detections — FAQ.

What makes this different from a traditional SIEM?
A traditional SIEM is very good at producing alerts and very bad at the part that matters — turning an alert into a decision. 24Observe closes that gap. Every detection opens an incident, and an AI analyst immediately investigates it: it gathers the evidence, traces what the threat touches, and returns a verdict you can act on. You are not handed a firehose of raw alerts to triage by hand; you are handed conclusions with the proof attached. See the AI analyst for how that investigation works.
How many detections come built in?
Eighty-seven prebuilt detections across fourteen packs, covering authentication abuse, data exfiltration, secret exposure, web attacks, threat-intel matches, AI-agent and tool-protocol abuse, cloud control-plane tampering, Linux host security, infrastructure and network health, and reliability. Most carry a recognised attack-technique mapping. You enable a pack with one action and tune the thresholds to your own environment — nothing is a black box you cannot adjust.
Can I write my own detections?
Yes, in a readable query language — no proprietary scripting dialect to learn. A detection is a saved query over your events with a threshold, a severity, and an attack-technique tag. The moment it matches, it opens an incident through the exact same pipeline, alert routing, and investigation as everything else. Writing a new rule takes a single line, not a training course.
Does it detect multi-step attacks, not just single events?
Yes. Single-event rules catch a spike; correlation catches a story. The platform can detect a sequence — many failed logins followed by a success for the same account — and cardinality patterns — one source touching ten distinct accounts, the signature of a spray or enumeration. These multi-event detections open incidents the analyst then investigates like any other.
How does threat intelligence factor in?
Every public address in your incoming events is checked against threat intelligence the moment it lands — known-bad indicators, anonymising networks, and listings — and flagged inline. You can also bring your own private indicators (addresses, domains, file fingerprints). A flagged indicator becomes a one-line detection and a strong corroborating signal in any analyst verdict.
Does it cover AI-agent and LLM-app threats?
Yes — and this is a category most SIEMs do not touch yet. There are dedicated detections for prompt injection, runaway tool loops, token and cost abuse, sensitive tool use, and tool-protocol manipulation between agents and the services they call. If you run AI agents in production, those threats are watched alongside your traditional security signals. See the analyst and the AI-agent security detections.
Is security a separate, more expensive tier?
No. The detection engine, correlation, threat intelligence, enrichment, cases, and the analyst are part of the platform — not a bolt-on "security tier" with its own per-gigabyte intelligence meter. Consolidating detection and investigation into one place is the entire point; gating it behind a second product would defeat it.
Can I forward detections to my existing SOC tooling?
Yes. Every detection can fire a signed webhook to your own systems, and a cursor-paginated export streams your audit trail gap-free for any downstream SIEM or data lake to poll. 24Observe is happy to be the detection-and-investigation layer that feeds the tools you already run.
How are incidents grouped when one event triggers many detections?
When a single root cause lights up many related incidents, the platform clusters the ones that share a root and collapses them into a single case with one notification — so one event does not page you fifty times. You investigate the case, not the flood.
What do I need to send for detections to work?
Your logs and events. Common formats — authentication logs, web-server access logs, firewall and cloud-security events — are normalised on the way in, so detections behave consistently regardless of how the upstream source formatted them. Point your sources at the platform and the relevant packs start matching.

Detect the threat. Then actually investigate it.

Turn on the packs, point your sources at the platform, and watch detections become investigated incidents — with the evidence and the next step already attached.