One Click Cost MGM Resorts $100 Million

In September 2023, a threat actor called Scattered Spider called MGM Resorts' IT help desk, impersonated an employee found on LinkedIn, and gained access to the company's entire network. The result: over $100 million in losses, days of disrupted operations, and a massive data breach affecting millions of guests. The attack didn't start with sophisticated malware. It started with a phone call and an employee who didn't follow verification procedures.

That's why cybersecurity best practices for employees aren't a nice-to-have — they're the single most important control standing between your organization and a catastrophic breach. I've spent years training teams across industries, and I can tell you this: technical controls fail when humans fail first.

This guide covers the specific, actionable practices that every employee — from the front desk to the C-suite — needs to internalize in 2026. No fluff. Just what works.

Why Employees Are the #1 Attack Surface

The 2024 Verizon Data Breach Investigations Report found that 68% of breaches involved a human element — phishing, stolen credentials, misuse, or simple errors. That number has hovered above 60% for years. Threat actors know that bypassing a firewall is hard. Tricking a person is easy.

Social engineering is the dominant initial attack vector. It's cheaper, faster, and more reliable than writing zero-day exploits. Your employees are targeted because they're the path of least resistance.

Here's what I've seen repeatedly: organizations pour millions into endpoint detection and SIEM platforms, then skip the $0 investment of actually training people. That's like installing a vault door and leaving the window open.

The Core Cybersecurity Best Practices for Employees

1. Treat Every Unexpected Message as Suspicious

Phishing remains the top method for credential theft and ransomware delivery. Employees need a simple mental model: if a message creates urgency, asks for credentials, or contains an unexpected attachment or link — pause. Verify through a separate channel.

This applies to email, SMS, Teams messages, and phone calls. The MGM attack was a vishing (voice phishing) attack, not an email. Train your people to verify identity before granting access or sharing information, regardless of the communication channel.

2. Use Strong, Unique Passwords and a Password Manager

Credential reuse is still epidemic. When an employee uses the same password for their corporate account and a compromised shopping site, that's a breach waiting to happen. Every account gets a unique, complex password — minimum 16 characters.

A password manager makes this practical. Without one, you're asking humans to memorize hundreds of random strings. That's not realistic, and unrealistic policies get ignored.

3. Enable Multi-Factor Authentication Everywhere

Multi-factor authentication (MFA) stops the vast majority of credential-based attacks. CISA has been pushing MFA adoption as one of the single highest-impact security measures any organization can implement. Employees need to understand not just how to use MFA, but why — so they never approve a push notification they didn't initiate.

Phishing-resistant MFA using FIDO2 hardware keys or passkeys is the gold standard in 2026. If your organization still relies on SMS codes, it's time to upgrade.

4. Lock Down Your Devices

Every employee laptop and phone is a potential entry point. The basics matter: enable automatic OS and application updates, use full-disk encryption, lock screens after 60 seconds of inactivity, and never install unapproved software.

Remote work amplifies this. Employees connecting from coffee shops or home networks need VPN access and should never use public Wi-Fi for sensitive work without it.

5. Report Incidents Immediately — No Blame

In my experience, the difference between a contained incident and a full-blown breach often comes down to reporting speed. If an employee clicks a suspicious link and waits three days to tell IT because they're embarrassed, the attacker has a three-day head start.

Build a no-blame reporting culture. Make the reporting process dead simple — a single button in the email client, a dedicated Slack channel, a phone number. Then celebrate reports, even false positives.

6. Follow the Principle of Least Privilege

Employees should only access the data and systems they need for their specific role. This is core to zero trust architecture, and it requires employee cooperation. Don't share credentials. Don't request access you don't need. Don't store sensitive files in personal cloud accounts.

When employees understand that least privilege protects them too — limiting their blast radius if their account is compromised — adoption goes up dramatically.

7. Verify Before You Trust

Wire fraud cost organizations billions last year. The FBI's IC3 consistently ranks business email compromise among the most financially damaging cybercrimes. An employee in accounting receives an email from the "CEO" requesting an urgent wire transfer. Without a verification step — a phone call, a secondary approval — that money disappears.

Every financial transaction, every credential reset, every access request needs out-of-band verification. Build it into your workflows.

What Are the Most Important Cybersecurity Practices for Employees?

The most important cybersecurity best practices for employees are: recognizing and reporting phishing attempts, using unique passwords with a password manager, enabling multi-factor authentication on all accounts, keeping devices updated and locked, and verifying unusual requests through a separate communication channel. These five actions prevent the vast majority of successful cyberattacks that begin with human error.

Phishing Simulations: The Practice That Changes Behavior

Reading a policy document doesn't change behavior. Getting caught in a realistic phishing simulation does. I've watched click rates drop from 30% to under 5% within six months of implementing regular phishing simulations combined with immediate, targeted training.

The key is frequency and realism. Monthly simulations that mimic current threat actor tactics — QR code phishing, fake MFA prompts, HR-themed lures — keep employees sharp. If you need a structured phishing simulation and training program, our phishing awareness training for organizations provides exactly that.

Simulations also give you measurable data. You can identify departments, roles, or individuals who need extra support. That's far more useful than a checkbox that says "annual training completed."

Security Awareness Training That Actually Sticks

Most security awareness programs fail because they're annual, boring, and disconnected from real threats. Effective training is continuous, scenario-based, and tied to actual incidents.

Here's what I recommend:

  • Monthly micro-training: 5-10 minute modules on specific threats — not hour-long compliance lectures.
  • Role-based content: Finance teams get BEC scenarios. HR gets W-2 scam training. Developers get secure coding practices.
  • Immediate reinforcement: When someone fails a phishing simulation, they get training on the spot — not six months later.
  • Real-world examples: Use actual breach case studies. The MGM incident. The Change Healthcare ransomware attack. Stories stick.

Our cybersecurity awareness training platform is built around these principles — short, engaging, and mapped to real threat intelligence.

Building a Zero Trust Mindset Across Your Workforce

Zero trust isn't just a network architecture. It's a mindset: never trust, always verify. When employees internalize this, security becomes reflexive rather than reactive.

This means questioning unexpected requests — even from people they know. It means locking their workstation every time they stand up. It means assuming that any link, attachment, or request could be adversarial until proven otherwise.

In 2026, with AI-generated deepfake audio and convincing phishing emails that lack the typos we used to rely on for detection, a zero trust mindset isn't paranoia. It's survival.

Measuring What Matters

You can't improve what you don't measure. Track these metrics monthly:

  • Phishing simulation click rate: Below 5% is your target.
  • Report rate: How many employees report suspicious emails? Higher is better — it means they're engaged.
  • Time to report: The gap between receiving a phishing email and reporting it. Shrink this relentlessly.
  • MFA adoption rate: Should be 100% for all corporate accounts.
  • Training completion rate: But don't stop there — completion without comprehension is worthless.

Present these numbers to leadership quarterly. When executives see click rates drop and report rates climb, security awareness gets budget and support.

The Bottom Line: Your Employees Are Your Last Line of Defense

Technical controls will never be perfect. Threat actors will always find gaps. When they do, a well-trained employee who spots the phishing email, questions the unusual request, or reports the suspicious activity is the difference between a near-miss and a headline.

Cybersecurity best practices for employees aren't complicated. They're habits — built through consistent training, realistic simulations, and a culture that rewards vigilance over compliance theater.

Start now. Enroll your team in cybersecurity awareness training and deploy phishing simulations that mirror what real threat actors are doing today. Your organization's resilience depends on it.