| Key Takeaways |
| 1. E-commerce is the second most targeted sector for DDoS and bot-based attacks in 2026 |
| 2. Account takeover, bot abuse, and payment fraud are the three highest-probability threats for most e-commerce teams. All three are automated, scalable, and designed to look like normal traffic until the damage is already done. |
| 3. Group-IB’s unified platform with Fraud Protection, Threat Intelligence, Digital Risk Protection, Attack Surface Management, and IR Retainer provides e-commerce security teams with intelligence-led coverage across every priority, from dark web activity targeting their platform to the fake storefronts their customers encounter. |
Your platform is open 24 hours a day. So are the attacks.
There’s no closing time in e-commerce, hence the importance given to e-commerce cybersecurity priorities. While your team sleeps, your checkout pages are live, your login forms are exposed, and the third-party scripts across your storefront are running without anyone watching.
Attackers don’t keep business hours. They run automated tools around the clock, probing the same surfaces your customers use, waiting for the moment your defenses are thinnest.
E-commerce is the second most targeted sector for DDoS and bot-based attacks in 2026. Not because the industry is careless, but because it’s valuable, always available, and built on layers of integrations that no single team has full visibility over.
73% of people surveyed in the WEF Global Cybersecurity Outlook 2026 said someone in their personal network was affected by cyber-enabled fraud in 2025. Those are your customers. When fraud affects them through your platform, the trust they had in you is lost.
The top 10 e-commerce cybersecurity priorities in 2026 are: account takeover prevention, geopolitical threat monitoring, bot abuse defense, AI vulnerability management, payment fraud controls, ransomware resilience, dark web monitoring, brand impersonation detection, third-party supply chain risk, and API security. Each addresses an active attack pattern confirmed in current threat intelligence.
10 Cybersecurity Priorities for E-Commerce Teams in 2026
1. Account takeover
Account takeover is a type of cyberattack in which a malicious actor gains unauthorized access to a legitimate user’s online account and assumes control of it. Once inside, attackers can steal sensitive data, make unauthorized transactions, exploit saved payment details, or use the compromised account to commit further fraud.
For e-commerce teams, that means a customer’s saved card, stored loyalty points, and delivery address handed to someone who was never supposed to have them.
Credential stuffing is the most common entry point. Attackers buy leaked username-password combinations on dark web forums and hammer your login page with automated tools until something opens. It looks like a normal login, until it isn’t.
The controls that close this gap: bot detection at login, MFA enforcement, velocity-based rate limiting, and dark web credential monitoring to catch compromised accounts before attackers use them.
Group-IB Fraud Protection detects compromised credentials before attackers use them, monitoring criminal marketplaces where stolen logins are sold and flagging suspicious sessions through device fingerprinting and behavioral analytics.
2. Geopolitical tensions and cyber warfare
A state-sponsored cyberattack is a cyber operation conducted or directed by a national government, or its proxies, to advance political, military, or economic objectives. Targets are not limited to governments. Businesses, telecommunications providers, financial institutions, and critical infrastructure are all in scope.
Geopolitics is the top factor influencing cyber risk mitigation strategies in 2026. 64% of organizations now account for geopolitically motivated cyberattacks, including disruptions to critical infrastructure and espionage. And 91% of the largest organizations have already changed their cybersecurity strategies in response to geopolitical volatility.
What makes this particularly dangerous for businesses is the collateral exposure. State actors don’t always target you directly. They target your suppliers, your cloud providers, your telecoms infrastructure, and reach you through the connections you trust most.
The practical response is not to build a military-grade defense. It is to treat geopolitical risk as an operational input rather than a background concern. That means embedding threat intelligence into security playbooks so your team knows which threat actors are active in your region and sector.
Group-IB CEO Dmitry Volkov has identified geopolitical shifts as a core driver of the hyperactive threat landscape in 2026, noting that attackers operate globally while defenders remain fragmented by regional data and intelligence boundaries. Group-IB Threat Intelligence tracks active APT groups across every major region, giving security teams advance warning of campaigns targeting their sector, before the attack becomes an incident.
3. Bot abuse
Bot abuse is automated software that attacks your platform to hoard inventory, drain promotions, or fake traffic at speeds no human can match or stop manually.
The numbers are hard to ignore. Group-IB fraud analysts tracking automated card-testing attacks observed a significant rise in AI-agent-assisted carding in 2025, with fraudsters using autonomous browser automation frameworks to test stolen card batches at an accelerated pace, a trend that peaks during high-traffic retail events.
There are three distinct threats, each needing different detection logic. Scalping bots drain inventory before real shoppers arrive. Credential stuffing bots hammer login pages with stolen passwords. Fake checkout bots inflate session counts and strain infrastructure without generating a single sale.
The controls that matter here are behavioral bot detection, CAPTCHA only at friction points, and traffic anomaly monitoring. Most importantly, test your defenses before peak season.
Your platform is being probed right now. Is your bot defense ready?
Group-IB Fraud Protection combines patented anti-bot technology with behavioral analytics to detect automated abuse at scale
4. AI vulnerabilities
AI vulnerabilities are security risks that arise when artificial intelligence tools used by both businesses and attackers are exploited to bypass defenses, commit fraud at scale, or expose sensitive customer data.
87% of respondents in the WEF Global Cybersecurity Outlook 2026 identified AI-related vulnerabilities as the fastest-growing cyber risk of 2025. For e-commerce teams, this is no longer an abstract concern. AI is actively on both sides of every attack.
The practical controls: audit every AI tool your team uses for data-exposure risks, monitor GenAI integrations for prompt-injection vulnerabilities, and treat AI-generated content in customer communications as a social-engineering surface that requires its own detection layer.
Group-IB’s Weaponized AI 2026 report tracks how criminal AI tools, from jailbreak frameworks to DarkLLMs, are being commercialized on dark web forums, providing security teams with advanced visibility into AI attack methods targeting their platforms before they materialize.
Group-IB Weaponized AI 2026 Report
5. Payment fraud
Payment fraud is any unauthorized or deceptive transaction made through your checkout — using stolen card details, compromised accounts, or manipulated payment flows to extract money before anyone notices.
It is the most direct financial threat e-commerce teams face. Global e-commerce fraud losses reached $48 billion in 2025, a 16% increase year-on-year, and are projected to reach $107 billion by 2029. Merchants lose roughly 3% of total e-commerce revenue to fraud, rising to 5% in high-risk markets.
The most common attack at checkout is carding, in which automated tools test stolen card numbers with small micro-transactions to identify which ones work before scaling up.
The controls that matter: real-time transaction monitoring, velocity checks, 3DS2 enforcement, device fingerprinting at checkout, and payment page integrity monitoring to catch skimming scripts before they harvest a single card.
Group-IB Fraud Protection uses device intelligence, behavioral analytics, and global threat intelligence to flag fraudulent sessions at the payment layer. This stops carding attacks and skimming attempts before transactions complete, without adding friction for legitimate customers.
6. Ransomware resilience
Ransomware is malicious software that encrypts an organization’s systems or data and demands payment to restore access. In 2026, most attacks combine encryption with data theft, meaning paying the ransom no longer guarantees recovery or prevents exposure.
For e-commerce teams, the timing of an attack matters as much as the attack itself. A ransomware hit during Black Friday, a major product launch, or peak holiday trading will be a revenue catastrophe.
2025 proved the point. In April 2025, Marks & Spencer was hit by a DragonForce ransomware attack that disrupted operations for weeks and is estimated to have cost the company around £300 million.
What separates organizations that recover in days from those that take months is rarely the quality of their defenses; it is the quality of their preparation. Among organizations that recovered within one week in 2025, a common factor was testing backup plans and predefined incident response roles.
Group-IB’s IR retainer provides pre-agreed response times, forensic specialists, and containment support, named by Gartner in the 2025 Market Guide for DFIR Retainer Services.
7. Dark web monitoring
Dark web monitoring is the continuous surveillance of underground forums, criminal marketplaces, and encrypted channels, scanning for stolen credentials, leaked customer data, and intelligence about planned attacks targeting your organization before that information is weaponized.
Most e-commerce teams discover a breach through a customer complaint or a spike in fraud. By then, the data has already been circulating underground for days, weeks, or months.
Over 703 million personal data records were discovered on dark web marketplaces in 2024, a 28% increase from 2023. Nearly 34% of all data breach incidents involved content eventually shared or sold on the dark web.
The threat arriving fastest in 2026 is infostealer malware. Infostealers like Lumma, Risepro, and META Stealer harvest saved credentials, cookies, and payment card data directly from infected devices, then sell that access on dark web markets within hours.
Group-IB contributed intelligence to INTERPOL’s Operation Secure in 2025, which led to the arrest of 32 suspects linked to infostealer malware networks across Asia, disrupting infrastructure that had compromised thousands of accounts across e-commerce and financial platforms.
8. Brand impersonation
Brand impersonation occurs when attackers create fake versions of your brand, such as spoofed websites, lookalike domains, and fraudulent social media accounts, to steal customer credentials and payment data. The attack never reaches your systems. It exploits the trust your customers already have in you.
E-commerce and retail account for 13.1% of all phishing attacks globally, consistently ranking among the top five most targeted sectors.
The controls that matter: continuous domain monitoring for lookalike registrations, DMARC and DKIM enforcement, social media account monitoring, and a takedown capability that acts before customers are exposed.
Group-IB Digital Risk Protection scans millions of resources across the open, deep, and dark web, identifying phishing sites and fake accounts at the earliest stage, often before traffic is even directed to them.
9. Third-Party and supply chain risk
Third-party and supply chain risk is the exposure an organization inherits from the vendors, platforms, scripts, and integrations it relies on. Attackers don’t need to breach your systems directly; they breach a supplier you trust and reach you through the connection you never thought to scrutinize.
For e-commerce teams, this risk is structural. A typical storefront runs analytics tools, payment processors, live chat widgets, recommendation engines, and shipping integrations, all of which are third-party scripts executing in your customer’s browser during checkout. Any one of them is a potential attack surface.
The DragonForce ransomware attack on Marks & Spencer exploited a third-party contractor to infiltrate the retail supply chain, disrupting online shopping, food distribution, and store operations, resulting in an estimated £300 million loss of operating profit.
In the same year, threat actors exploited OAuth integrations in Salesloft to gain access to customer environments at scale, with one shared vendor serving as the entry point for a cross-sector breach.
The practical controls: vendor security assessments before onboarding, Content Security Policy enforcement to monitor third-party scripts running on your checkout pages, and continuous attack surface monitoring to catch new exposures as your vendor ecosystem expands.
According to Group-IB’s Hi-Tech Crime Trends 2026 report, supply chain attacks have become the most scalable model for both cybercrime and state-aligned operations, with AI-assisted tooling compressing attack timelines from weeks to hours
10. API security risk
An API (Application Programming Interface) is the connection layer between your storefront and the systems it connects to, such as payment processors, inventory systems, loyalty platforms, shipping providers, and recommendation engines. Every one of those connections is an endpoint. Every endpoint is a potential attack surface.
For e-commerce teams, APIs are everywhere and often invisible. Most teams don’t have full visibility into how many they’re running, let alone which ones are exposed.
In 2025, APIs accounted for 17% of all published security vulnerabilities, making them one of the largest single attack surfaces in modern software.
Dominant API attack methods targeting e-commerce include payment and coupon fraud, account takeover campaigns, data scraping, and business-logic abuse.
Group-IB Attack Surface Management continuously identifies exposed API endpoints across your external footprint, including forgotten integrations and shadow APIs that internal teams have lost track of.
Your Next Move Matters. Group-IB Helps You Make the Right One.
The threat landscape in 2026 does not reward organizations that are almost ready.
Every priority in this article maps to a failure mode that has already played out, in a retailer’s Black Friday meltdown, a payment page quietly skimming card data for months, a brand being impersonated across thousands of fake domains while the real company had no idea.
These are not hypothetical scenarios. They are documented incidents from the past twelve months, and the organizations that experienced them were not careless. They were unprepared for the speed at which modern attacks move.
Three steps to take before the next incident takes them for you:
- Audit what you actually have. Map every API, every third-party integration, every vendor with access to your systems. Most teams are defending a perimeter they have never fully seen.
- Test what you assume is working. A playbook that has never been run is a hypothesis. Simulate attacks, test backups, and run tabletop exercises before an incident forces the conversation.
- Get intelligence that moves faster than the threat. Group-IB’s unified platform combines Threat Intelligence, Fraud Protection, Digital Risk Protection, and Attack Surface Management, giving e-commerce security teams real-time visibility over the criminal activity targeting their platform before it arrives. Trusted by 500 million+ users across banking, payments, and e-commerce globally.
