The 9 Biggest Cybersecurity Lies Told to CISOs

Cybersecurity can seem like a bit of a zoo these days. There are myriad problems to solve as the landscape changes under our feet with new technologies, evolving business needs, and an attack surface that continues to expand. Into this mix, add more vendors, more consultants and more experts, each with bold statements on how to win the war against cyber threat actors.

Unfortunately, while many of these attempts to make enterprises safer may be genuine, there are a lot of blanket statements out there that can undermine a CISO’s efforts to secure the business. In this post, I will try to tackle the most oft-repeated cybersecurity misconceptions we see thrown at CISOs.

1. Windows Security Is Enough To Secure Your Microsoft Endpoints

Who is the biggest security vendor of them all? Before taking a mental inventory of the major 3rd party players that no doubt immediately spring to mind, it might come as a surprise to realize that they are all outstripped by Microsoft, with its unique position as both OS vendor and vendor of security software for its own OS, variously known as ‘Microsoft Defender’, ‘Windows Defender’, and now ‘Windows Security’.

2021 was another bumper year of Microsoft vulnerabilities, exploits, and breaches, with threat actors taking quick and merciless advantage of Microsoft vulnerabilities in Exchange Server like ProxyLogon and ProxyShell. Those vulnerabilities were followed by PrintNightmare, which in turn was followed by HiveNightmare.

Microsoft Defender did little to halt any of the ransomware attacks by Hafnium and Conti gangs that exploited such vulnerabilities, and the product was itself also in the wars after it was revealed Defender contained a privilege escalation vulnerability for over 12 years.

Recent history suggests that CISOs that rely on an OS vendor to win a fight against ransomware are going to be on the losing side of the battle.

2. Macs are Safe ‘By Design’

Unlike Microsoft, Apple is not in the business of selling security software in an attempt to protect its own products, but it still actively promotes the security of macOS as one of the unique selling points of Macs over other hardware. Accordingly, Apple has a vested interest in discouraging the perception that third party security controls are required for Macs in the enterprise just as much as they are for other endpoints.

Apple admitted earlier this year that macOS does have a problem with malware, and while few companies use Macs as servers or network controllers, thus sparing them the attention of ransomware operators, they are extremely popular among both C-Suite executives and developers. This makes enterprise Macs juicy targets for threat actors interested in high-value targets, and the new macOS malware seen appearing over the last 12 months has mostly been espionage and backdoors directed at specific targets.

Meanwhile, Mac users themselves are largely unaware of the many ways that malware can and does beat the built-in security technologies used by Apple. The Mac’s built-in security relies heavily on code-signing, certificate revocation checks and legacy file signatures. Threat actors have little trouble in bypassing these, and like Microsoft Windows, the complexity of operating system software ensures that critical bugs are patched on an increasingly more frequent basis.

On top of that, the Mac’s built-in security controls offer no visibility to users or admins. As a CISO, how would your admins know if any of the Macs in your fleet were infected with a backdoor, spyware or other macOS malware without external security software to offer that visibility?

3. Prevention Isn’t Possible, and Detection Is Enough

It’s become a trope among legacy AV vendors in their attempts to excuse the failures of AV Suites and EPP to claim that prevention is impossible, and post-infection detection and quarantine is the only realistic goal.

But we are in 2022, we have had machine learning and AI at our disposal for years now, and there is no reason why any CISO should accept that a vendor cannot prevent file-based malware pre-execution or on-execution.

Vendors that rely entirely on signature-based detection should supplement or replace their detection engines with static AI engines that can prevent most types of malicious PE files. More importantly, CISOs should reject vendors that tell them prevention isn’t possible.

4. Zero Trust Is Achievable For Most Organizations

The tried-and-trusted adage that “You are only as strong as your weakest link” gains new poignancy in today’s move to Zero Trust environments. While embracing Zero Trust is part of the right direction in which to travel to reduce your attack surface, the reality is that most organizations cannot effectively implement a complete Zero Trust Architecture (ZTA) across multiple assets and security systems.

Organizations should exercise caution when vendors offer a “Zero Trust SKU”. Beyond the marketing spiel, achieving a ZTA security model requires integration across all technologies. There’s no “plug-and-play” way to transform your organization overnight. Indeed, moving from a legacy perimeter-based security model to a ZTA security model is a multi-year journey, while attacks on businesses occur on a daily basis.

ZTA is one piece in the security jigsaw, but enterprises need to cover their rear and have controls in place for when trust is breached, or simply never gained.

Like many developments in enterprise security, ZTA offers promise but it is no panacea. CISOs should beware vendors that tell them ZTA is a magic bullet that can solve all their security headaches.

5. Mobile Security Is Not a Must

Incredibly, there are vendors (and security practitioners) that still haven’t woken up to the reality of mobile devices in the enterprise. Sometimes, humans act like something doesn’t exist if they simply refuse to see it, but we have been checking our business emails and accessing work data from our mobile devices for years now. Most organizations understand that attempts to stop users conducting work tasks on their mobile devices leads to an unacceptable impact on productivity.

The mobile space is dominated by two main OS vendors, Google and Apple, and both understand the necessity of mobile security, although they take very different approaches to it. Recently, Google explained how an iOS zero-day, zero-click vulnerability had compromised Apple users. The technical level is beyond most skilled programmers and security professionals, let alone ordinary users.

Despite that sophistication, that exploit wasn’t developed by a nation-state actor but by the NSO Group, a private enterprise. In such a climate, where profit-driven attackers can invest that level of expertise into compromising our mobile devices, what business with intellectual property to defend, customer data to protect (and regulatory fines to avoid) can afford to pretend that mobile security is optional?

Mobile attacks are real and CISOs should apply mobile threat defense measures to keep track of user and device behavior and actions.

6. Backups Will Protect You Against Ransomware

The world of information security moves fast, and what was true yesterday (or, to be frank, a few years ago now) is not necessarily true today. Cast your mind back to NotPetya and WannaCry in 2017, and the hard-learned lesson that businesses without backups were setting themselves up as hostages to fortune, or rather the misfortune of being hit by ransomware.

The lesson didn’t go unheeded either by businesses or attackers, and by 2019 we saw the first human-operated ransomware gangs – Maze and DoppelPaymer – pivot to the double-extortion method: denial-of-access to files via encryption with the threat of public data leaks on top. Now, backups didn’t get companies off the hook if they valued the privacy of their data.

Double extortion soon became the standard MO for the majority of ransomware gangs, and some even went so far as to threaten to leak the data of clients or to ransom the clients of victim organizations.

Even so, some organizations were prepared to bite the bullet, risk data leakage, recover from backups and deny criminals a pay-day. Unfortunately, this only led the criminals to raise the stakes to triple extortion: on top of the threat of leaked data and file encryption, they started flooding victim companies with DDoS attacks to force them back to the negotiation table.

The lesson for CISOs is this: ransomware operators are flush with cash from previous victims. They can afford to buy large-scale botnets and hit your network with DDoS till you pay; they can afford to buy Initial Access from other criminals, and they can afford to pay human operators (aka “affiliates”) to carry out attacks. Backups mean nothing in today’s double and triple extortion ransomware threatscape. What matters is preventing compromise in the first place.

7. The Ransomware Threat Can Be Solved By Government

We’ve seen multiple worthy and valiant attempts to fight the growing surge in ransomware coming out of the U.S. government’s new focus on cybercrime.

The Colonial Pipeline attack, the JBS meat-supplier attack and others have created a growing concern for enterprises, as they feel they are left alone in the battle to keep our way of life safe. As laudable as the government’s efforts to take action are, cybercriminals are – by their very nature – undeterred by law enforcement.

No sooner had Biden and Putin discussed a crackdown on criminals that attacked healthcare and other critical infrastructure organizations than new groups emerged specifically to do just that. Where some criminals fear to tread, others will happily take their place if they sniff an opportunity to make money. Federal laws don’t exempt us from locking our own doors.

Yes, government help is always welcome. No, government help isn’t going to alleviate the need for enterprises to protect their businesses against crime.

8. You Don’t Need Humans If You Implement Automation

The cybersecurity skills shortage is real, but while automation can make valuable contributions to productivity and efficacy, automation will never replace the human element in the cybersecurity equation.

Risk is not static, and the risk surface constantly grows and changes as organizations mature and expand their businesses. More services, more production servers, more flow, and more customer data make the challenge to reduce risk an ongoing journey rather than a single task that can be completed with some consolidated effort. As there is no silver bullet to understand enterprise risk or quantify the means to keep a business safe, there will always be a need for cybersecurity talent that can innovate, assess and close these gaps.

Attack vectors are also constantly evolving. Three years ago, organizations relied on static analysis of PEs and other executable files to detect and prevent malware. Soon after, we started seeing fileless, script-based attacks, and lateral movement attempts successfully penetrating enterprise networks. A massive storm of supply chain attacks, like SolarWinds, Kaseya, and more have added yet another dimension to risk management. Meanwhile, the ransomware economy created a massive network of affiliates that used new spam techniques to bypass traditional solutions.

Yes, humans need technology to help scale, maximize productivity, eliminate mundane tasks, and create focus on critical items needing attention, but the best case scenario is that cybersecurity automation will reduce the growing landscape and attack surface.

CISOs will still need smart people who can connect, operate and triage all that attackers (with their own automation tools to hand) will continue to throw at us.

9. MDR Is All You Need To Stay Safe

While automation will never replace the need for human analysts, there is a converse to that, too: humans will never be able to detect, respond and remediate identifiable attacks as fast as computers. We need to use our human and computer resources in ways that are appropriate to the tasks each is best suited to.

Humans will do far better at triaging the edge cases, unknowns and false positives, but on-device AI that never sleeps and works at the speed of your CPU will beat attackers much faster than a remote MDR analyst in the cloud getting a delayed and partial feed of your network telemetry.

Yes, MDR offers added-value to a good next-gen AI endpoint protection agent. No, MDR is no substitute for on-device, autonomous protection, as the 2020 MITRE results convincingly proved.


There’s no escaping the fact that cybersecurity is a complex business, but getting the basics right is the first step. Reduce your dependencies on OS vendors, deploy on-device endpoint protection that offers visibility across your entire estate, and retain cybersecurity talent: these are all sound starting points for every CISO.

Meanwhile, try to see through the misconceptions that are passed around on a regular basis. I’ve called out nine of the most common ones I hear in this post, but there are undoubtedly far more howling in the wind. What other well-intentioned statements that do more harm than good are out there? We’d love to hear your thoughts on LinkedIn, Twitter, and Facebook!