In as we speak’s dynamic risk panorama, securing the digital entrance traces is paramount. At Cisco, with greater than 326 million emails incoming every quarter, we confronted the identical problem many organizations do: find out how to defend towards subtle electronic mail threats whereas sustaining person productiveness. Our reply was a daring, layered safety strategy, powered by AI-driven options like E mail Risk Protection and the superior analytics of Splunk. Right here’s how we did it, and what we realized.
The rising risk panorama
E mail: It’s the one main assault vector for safety breaches for companies throughout the globe. In 2023, the FBI reported $2.9 billion of enterprise losses attributed to electronic mail cyberattacks within the US, an alarming improve of over 805% since 2016. Since 2022, electronic mail ransomware incidents are up 18%. These looming threats develop daily and underscore the crucial want for a strong, multi-layered electronic mail safety technique.
Whereas native electronic mail filters present a baseline stage of safety, they’re inadequate in as we speak’s advanced risk surroundings. In Cisco IT, we acknowledged this hole and commenced constructing a plan to reinforce our defenses.
Nevertheless, as we have been crafting a plan, a brand new drawback rose in precedence. Our executives have been annoyed with inboxes filled with spam, advertising, and litter. A fast session with Cisco Talos confirmed our plan, and we got down to improve our front-line electronic mail defenses — and shortly.
Placing our plan into motion
We leverage many options throughout Cisco’s safety portfolio to maintain us digitally resilient. However we knew that bringing the items along with the AI-driven capabilities of Cisco E mail Risk Protection and Splunk would give us an unparalleled benefit: deeply built-in, layered defenses that cut back gaps, improve safety of customers and units, and safe entry to functions. Over the previous decade, we have now applied a layered strategy to guard our customers on any machine, wherever they join, leveraging:
- Cisco XDR, which acts as a bridge between our safety functions. It unifies our safety insights and correlates information throughout a number of domains.
- Cisco Safe Malware Analytics, which determines if incoming information comprise malware by isolating and opening them on a digital machine, then analyzing system impacts. This powers extra knowledgeable risk detection.
- Cisco Safe Endpoint, which protects our endpoints by figuring out and blocking information containing malware, together with details about who might have opened and/or shared these information.
- Cisco Safe Endpoint Analytics, which gives endpoint machine visibility, discovering endpoint threats earlier than they’re an issue together with day-zero malware, harmful person conduct, information exfiltration, and so forth. It sees what functions or Software program as a Service (SaaS) are in use, makes use of forensics for incident response, and features visibility to machine varieties and working techniques on the community.
- Cisco Umbrella, which provides information and insights about particular domains, enabling us to dam these with poor reputations.
- Cisco Endpoint Safety Analytics Constructed on Splunk (CESA) with Cisco AnyConnect Community Visibility Module (NVM), which feeds us wealthy person conduct information for electronic mail risk investigations. The NVM is the one expertise for cell units that creates IPFIX information (IP Movement Info Export). It plugs into CESA, which delivers the entire required Splunk analytics software program obligatory to investigate NVM telemetry.
And in Could 2024, dealing with more and more advanced threats, we deployed Cisco Safe E mail Risk Protection to mitigate threats in actual time. This platform enlists 90+ AI language fashions (LLM) detectors to mechanically detect electronic mail risks, then it proactively takes the obligatory subsequent steps to guard the enterprise. This innovation saves us 1000’s of hours of manually sorting, learning, and gauging intent of emails, with numerous room for human error. As unhealthy actors more and more utilize AI, E mail Risk Protection ranges the enjoying discipline for us.
The E mail Risk Protection impression report affords full visibility into AI-tracked threats, displaying traits over time in addition to additional insights and analytics.
For Cisco IT, integrating E mail Risk Protection was seamless, taking solely a matter of days.The truth is, since deployment day, we’ve acquired zero complaints from the enterprise and nil unfavorable impression on our staff’ expertise. With E mail Risk Protection on prime of our present layers of electronic mail safety, worker mailboxes not should take care of enterprise electronic mail compromise (BEC) the place unhealthy actors impersonate trusted sources to steal cash from companies, phishing, or different threats. From malware to advertising spam, we are able to shortly determine and remediate all types of undesirable mail, and do with it as we see match organizationally, whether or not it’s shifting it to the junk folder or blocking it altogether.
Elevating incident response with Splunk’s superior analytics
Even with our entrance traces being well-protected by our strong layered defenses, our groups wanted extra to remain forward of unhealthy actors. In April 2025, our incident response workforce built-in Splunk into our operations, giving us entry to among the most modern safety developments in the marketplace.
With Splunk Assault Analyzer, Cisco now allows automated risk evaluation and digital forensics for credential phishing and malware. Its proprietary expertise extracts and analyzes malicious content material hidden in textual content, photos, macro supply code, web site content material, and extra. This automation considerably improves our workforce’s operational effectivity, saving analysts’ time and enhancing the flexibility of our workforce to research advanced phishing threats with larger velocity and accuracy.
Quantifiable impression: Attaining resilience at scale
For Cisco, our layered strategy is constructed to frustrate the attacker, not the person. On the subject of attackers, we’ve had a lot. Throughout a typical quarter, Cisco mailboxes collectively obtain greater than 326 million inbound emails. For us, “one in one million” isn’t ok with regards to safety. Our unified portfolio stops threats of their tracks.
Let’s break down the impression of our strategy over a typical quarter:
- 41,000,000 (12.57%) emails blocked for having poor IP reputations
- 23,000,000 (7.05%) emails blocked for DMARC failures (Area-based Message Authentication, Reporting, and Conformance)
- 6,800,000 emails blocked for spam
- 49,000 emails blocked for having poor area reputations
- 1,940 emails blocked for holding viruses
- 840 emails blocked for holding malware
- 70,000 extra emails confirmed threats blocked by E mail Risk Protection’s LLM detectors
- 1000’s extra emails blocked for different numerous causes
This stage of visibility, integration, and automation is unmatched out there. Whenever you’re coping with various customers, workplaces, and a mixture of managed and unmanaged units, there’s no different to a layered complete, platform-based strategy. Our technique successfully closes gaps within the assault floor to make our techniques as well-defended as potential.
For IT and safety groups our journey affords crucial classes:
- A layered protection is non-negotiable: Counting on single-point options is inadequate. A complete, built-in portfolio is important.
- AI is a drive multiplier: AI-driven options like Cisco Safe E mail Risk Protection considerably improve risk detection and cut back guide overhead, even leveling the enjoying discipline towards AI-powered assaults.
- Automation and analytics are key to effectivity: Options like Splunk Assault Analyzer automate crucial processes, releasing up helpful safety workforce sources and bettering incident response.
- Integration is paramount: The true energy comes from seamlessly connecting safety instruments, guaranteeing information correlation and unified insights throughout your surroundings.
Wanting forward: Persevering with to construct a future-proofed office
We’re not accomplished constructing but. Cisco’s integration of AI, Splunk, and electronic mail safety represents a paradigm shift in how organizations can strategy safety and office innovation. By combining cutting-edge expertise with a unified imaginative and prescient for a way they will work extra successfully collectively, we’re not solely defending our entrance traces but in addition setting a brand new normal for resilience and flexibility within the fashionable office. We’re bringing expertise collectively to realize issues which have by no means been potential earlier than.
Constructing on this basis, our incident response workforce is within the early levels of deploying Splunk Enterprise Safety as a part of our evolving electronic mail safety technique. Whereas this integration continues to be in progress, it displays our ongoing dedication to strengthening detection, investigation, and response capabilities throughout the environment. As we proceed to discover and develop sensible use instances, we anticipate that Splunk Enterprise Safety will turn out to be a key element in our total strategy to figuring out and mitigating email-based threats — additional future-proofing our safety posture for what’s forward.
Because the risk panorama evolves, so does Cisco. Taking these learnings, we push ahead, persevering with to innovate, combine, and strengthen our defenses to guard what issues most.
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