Essential Cybersecurity Tips Everyone Needs to Know
Cybersecurity tips everyone needs to know include using strong, unique passwords, enabling multi-factor authentication, keeping software updated, avoiding suspicious links and downloads, and backing up data regularly. These five practices form the foundation of personal and business digital safety in 2025.
As someone who’s helped thousands of small and midsize businesses protect their financial data for over two decades at Complete Controller, I’ve seen firsthand how a single overlooked setting or reused password can lead to devastating breaches. The average small business now faces $120,000 to $1.24 million in recovery costs after a cyberattack—but the good news is that most attacks are completely preventable. In this guide, I’m sharing the cybersecurity strategies that actually work, broken down into clear actions you can take today to protect yourself and your business.
What are essential cybersecurity tips everyone needs to know?
- Essential cybersecurity tips include strong passwords, multi-factor authentication, software updates, phishing awareness, and regular backups.
- Use unique, complex passwords for every account and store them in a password manager.
- Enable multi-factor authentication (MFA) on all important accounts, especially email, banking, and business systems.
- Keep operating systems, apps, and antivirus software updated to patch known vulnerabilities.
- Back up critical data to an encrypted, offline or cloud-based solution you can restore from.
Start with the Basics: The 5 Foundational Cybersecurity Tips
These are the non-negotiables—the cybersecurity practices that stop most common attacks before they even get started.
Use strong, unique passwords for every account
Recent data shows that 94% of passwords are reused across two or more accounts, creating a domino effect when one site gets breached. In 2025 alone, over 16 billion passwords were exposed in a single massive breach—and analysis revealed that only 3% met basic complexity requirements. The password “123456” appeared over 3.7 million times in that leaked data.
A strong password is at least 12 characters long and mixes uppercase, lowercase, numbers, and symbols. Skip dictionary words, personal info like birthdays or pet names, and obvious patterns.
- Never reuse passwords across accounts—if one site is breached, attackers will try that same password on your email, bank, and business tools
- Use a password manager like 1Password, Bitwarden, or LastPass to generate and store unique passwords behind one strong master password
- Change default passwords on routers, IoT devices, and admin accounts immediately
Enable multi-factor authentication (MFA) everywhere
While 83% of IT security professionals recommend MFA, only 34% of small businesses with 26 to 100 employees have actually implemented it. Nearly two-thirds of global SMBs (65%) still operate without MFA at all—leaving them vulnerable to automated credential attacks.
MFA adds a second layer of protection so that even if a password is stolen, the account stays locked.
- Use authenticator apps like Google Authenticator or Microsoft Authenticator instead of SMS when possible—they’re more phishing-resistant
- Prioritize MFA on email, cloud storage, business bookkeeping essentials, payroll, and any system with financial or customer data
- For business, require MFA for all employees and enforce it through your identity provider
Keep software and devices updated
The vulnerability landscape is accelerating dramatically—over 21,500 new vulnerabilities (CVEs) were disclosed in just the first half of 2025, an 18% increase over 2024. Approximately 38% of these were rated “High” or “Critical” severity. Historical data shows that 80% of companies that experienced a breach could have prevented it by patching software on time.
- Turn on automatic updates for operating systems, browsers, and critical apps
- Patch routers, firewalls, and IoT devices—many breaches start with unpatched edge devices
- For businesses, use a centralized patch management tool to monitor all workstations and servers
Install and maintain antivirus and firewall protection
Antivirus software scans for malware, ransomware, and spyware, while firewalls block unauthorized network access.
- Use reputable antivirus on all devices and keep it updated
- Enable the built-in firewall on your OS and router
- For businesses, consider endpoint detection and response (EDR) tools for deeper threat visibility
Back up data regularly and test restores
Backups are your last line of defense against ransomware and hardware failure.
- Follow the 3-2-1 rule: 3 copies of data, on 2 different media, with 1 copy offsite or offline
- Use encrypted cloud backups like Backblaze or Carbonite, or external drives that are disconnected after backup
- Test restore procedures quarterly—many businesses discover their backups are broken only after an attack
How to Spot and Stop Phishing: The #1 Threat to Everyone
Research shows that 91% of cyberattacks begin with a phishing email. Over 90% of businesses globally experienced at least one phishing attack in 2024, with more than 80% of all reported security breaches involving phishing. On average, 3.4 billion phishing emails are sent every day worldwide.
Recognize the red flags of phishing emails and texts
- Urgent language (“Your account will be closed!”)
- Mismatched sender addresses or domains
- Suspicious links (hover to see the real URL)
- Requests for passwords, payment info, or gift cards
- Unexpected attachments or invoices
Verify before you click or reply
If an email claims to be from your bank, payroll provider, or accountant, call the official number—not the one in the email—to confirm. For business, train employees to report suspicious messages to IT before taking action. Use email filtering tools that flag or quarantine phishing attempts. The FTC offers excellent phishing awareness tips that complement these practices.
Protect your business from business email compromise (BEC)
BEC attacks target finance teams with fake vendor invoices or CEO impersonation. Recent data shows 64% of businesses faced BEC attacks in 2024, with typical financial losses averaging $150,000 per incident.
- Implement a dual-approval process for payments and vendor changes
- Require verbal or secondary channel confirmation for any payment instructions received via email
- Monitor for unusual login locations or times on accounting and payroll systems
Secure Your Devices: Phones, Laptops, and Home Networks
Your devices are the gateways to your data—lock them down.
Lock and encrypt every device
- Use strong passcodes, PINs, or biometrics on all phones, tablets, and laptops
- Enable full-disk encryption (BitLocker on Windows, FileVault on Mac)
- For business, enforce device encryption and remote wipe policies through mobile device management
Secure your home and office Wi-Fi
An unsecured network exposes everything on it.
- Change the default router login and Wi-Fi password
- Use WPA3 encryption if available; otherwise, use WPA2
- Create a separate guest network for visitors and IoT devices
- Consider a business-grade firewall for offices with sensitive data
Be smart about public Wi-Fi and hotspots
Public networks are high-risk environments, especially with the rise of remote work security best practices becoming essential.
- Avoid logging into banking, email, or business systems on public Wi-Fi
- Use a trusted VPN like NordVPN or ExpressVPN when connecting from cafes, airports, or hotels
- Disable automatic Wi-Fi connections and “connect to open networks” settings
Protect Your Business: Cybersecurity Tips for Small and Midsize Companies
Small businesses are prime targets—they have valuable data but often lack robust security.
Limit access with role-based permissions
Not everyone needs access to everything.
- Grant employees access only to the systems and data required for their role
- Regularly review and remove access for former employees or those who’ve changed roles
- For accounting and payroll, restrict access to a small, trusted team
Secure cloud and accounting systems
Your financial data is a top target. This is where accounting outsourcing economics can provide both security and efficiency benefits.
- Enable MFA on all cloud services like QuickBooks Online, Xero, Microsoft 365, and payroll platforms
- Use strong, unique passwords for each system and store them in a password manager
- Monitor login activity and set up alerts for suspicious logins
Train employees regularly
People are often the weakest link—but they can also be your strongest defense.
- Conduct quarterly cybersecurity training covering phishing, password hygiene, and safe browsing
- Run simulated phishing tests to reinforce learning
- Make security part of onboarding and culture, not just an IT checklist
Real-World Case Study: How a Small Business Recovered from a Ransomware Attack
In 2024, a midsize accounting firm in Texas was hit by ransomware that encrypted their client files and QuickBooks data. The attackers demanded $75,000 in cryptocurrency. According to CISA’s published case study, the firm had two critical advantages: they used a reputable cloud backup solution with versioning and had a tested disaster recovery plan.
Instead of paying the ransom, they isolated infected machines, reported the incident to law enforcement, restored systems from clean backups, and strengthened their security posture. Total downtime was under 48 hours with no permanent data loss. The cost of recovery was a fraction of the ransom demand.
Key takeaway: Backups and a clear incident response plan are essential cybersecurity tips for any business. CISA provides comprehensive ransomware recovery best practices that helped guide this firm’s successful response.
What Most Cybersecurity Tips Miss: The Human and Financial Side
Most guides stop at “use strong passwords.” Real security also involves trust, cost, and practical decision-making.
The hidden cost of poor cybersecurity
Small businesses typically pay between $120,000 and $1.24 million to resolve a data breach in 2025. Research shows that 60% of SMBs that experience a cyberattack go out of business within six months. Additionally, 75% of SMBs report they could not continue operating if hit with ransomware.
A single breach can cost tens of thousands in downtime, data recovery, forensic investigation, legal fees, regulatory fines, and reputational damage. Investing in basic cybersecurity measures like MFA, backups, and training is far cheaper than dealing with a breach.
Building a culture of security, not fear
Security shouldn’t feel like a burden.
- Frame cybersecurity as “protecting our clients and our livelihood” rather than rules to follow
- Celebrate good behavior like reporting phishing emails and make it easy to ask for help
- As a leader, model the behavior: use MFA, follow policies, and prioritize security in budgets
When to bring in experts
Not every business can handle security alone. The NIST framework offers excellent multi-factor authentication best practices that can guide your implementation.
- If you’re using QuickBooks, Xero, or other cloud accounting tools, work with a bookkeeping or IT partner who understands security best practices
- For complex environments, consider a managed security service provider or virtual CISO
- Regular security assessments and vulnerability scans can uncover gaps before attackers do
Final Thoughts
Cybersecurity doesn’t have to be complicated. The most effective cybersecurity tips are simple: strong unique passwords, multi-factor authentication, regular updates, phishing awareness, and reliable backups. For businesses, add role-based access, employee training, and a tested incident response plan.
As the founder of Complete Controller, I’ve seen how a few small changes—like enabling MFA on QuickBooks or setting up automatic backups—can prevent catastrophic losses. Security isn’t about being perfect; it’s about being prepared.
Start today with these three actions:
- Enable MFA on your email and accounting systems
- Update all devices and software
- Back up your critical data and test a restore
For hands-on help securing your financial systems and building a safer, more resilient business, visit Complete Controller to connect with our team of experts who understand both security and small business needs.
Frequently Asked Questions About Cybersecurity Tips
What are the most important cybersecurity tips for beginners?
Use strong, unique passwords, enable multi-factor authentication, keep software updated, avoid suspicious links, and back up your data regularly.
How can I protect my small business from cyberattacks?
Use MFA on all critical systems, train employees on phishing, limit access to sensitive data, keep software patched, and maintain tested backups.
Do I really need antivirus software?
Yes, for Windows, Mac, and business devices. Antivirus helps detect and block malware, ransomware, and other threats, especially when combined with a firewall.
How often should I change my passwords?
Change passwords immediately if there’s a known breach or compromise. Otherwise, focus on using strong, unique passwords and a password manager rather than frequent arbitrary changes.
What’s the easiest way to improve my cybersecurity right now?
Enable multi-factor authentication on your email, banking, and business accounts—this single step blocks the vast majority of automated attacks.
Sources
- Cyber Readiness Institute. “New Study Underscores Slow Adoption of Multifactor Authentication.” CRI News, 2025. https://cyberreadinessinstitute.org/news-and-events/new-study-underscores-slow-adoption-of-multifactor-authenification/
- Cybersecurity & Infrastructure Security Agency (CISA). “Ransomware Recovery Case Study: Accounting Firm in Texas.” CISA, 2024. https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-123a
- Cybersecurity & Infrastructure Security Agency (CISA). “Ransomware Recovery Best Practices.” https://www.cisa.gov/stopransomware
- DeepStrike. “Vulnerabilities Statistics 2025: Record CVEs, Zero-Days & Exploits.” DeepStrike Blog, October 2025. https://deepstrike.io/blog/vulnerability-statistics-2025/
- Federal Trade Commission. “How to Recognize and Avoid Phishing Scams.” https://www.consumer.ftc.gov/articles/how-recognize-and-avoid-phishing-scams
- Heimdal Security. “Password breach statistics in 2025.” Heimdal Security Blog, June 2025. https://heimdalsecurity.com/blog/password-breach-statistics/
- Huntress. “Statistics on Phishing Attacks that Target Businesses.” Huntress Blog, 2024. https://www.huntress.com/phishing-guide/phishing-attack-statistics
- National Institute of Standards and Technology (NIST). “Multi-Factor Authentication Best Practices.” https://pages.nist.gov/800-63-3/sp800-63b.html
- PurpleSec. “The True Cost Of A Data Breach To Small Business.” PurpleSec Blog, 2025. https://purplesec.us/learn/data-breach-cost-for-small-businesses/
- Security.org. “Cyber Security Tips, Facts & Statistics for 2025.” 2025. https://www.security.org/digital-safety/cyber-security-tips/
- Sophos News. “Cybersecurity Awareness Month: 10 Tips to Stay Safe Online.” 13 Oct. 2025. https://news.sophos.com/en-us/2025/10/13/cybersecurity-awareness-month-2025-10-tips/
About Complete Controller® – America’s Bookkeeping Experts Complete Controller is the Nation’s Leader in virtual bookkeeping, providing service to businesses and households alike. Utilizing Complete Controller’s technology, clients gain access to a cloud platform where their QuickBooks™️ file, critical financial documents, and back-office tools are hosted in an efficient SSO environment. Complete Controller’s team of certified US-based accounting professionals provide bookkeeping, record storage, performance reporting, and controller services including training, cash-flow management, budgeting and forecasting, process and controls advisement, and bill-pay. With flat-rate service plans, Complete Controller is the most cost-effective expert accounting solution for business, family-office, trusts, and households of any size or complexity.
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