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The Case of Simultaneous, Short Duration DDoS Attacks

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Over the last decade, DDoS attacks have proliferated, possibly becoming the primary threat for every website or web application.

The ultimate goal is to bring down sites by flooding them with fake requests, usually from multiple locations. The outcome of such attacks ranges from slow page loads to blocking legitimate traffic.

Among the thousands of DDoS attacks that happen every day, you’ll find attacks that last a number of days, as opposed to short-duration attacks that only take a few minutes for attackers to coordinate and launch at a time.

These attacks are becoming much more commonplace, whether the goal is to take a site down or if they’re used as a smokescreen to divert site owners’ attention.

In this article, I would like to share our real life experience with short-duration DDoS attacks, addressing what happens when this type of attack targets multiple sites simultaneously.

5 Short Attacks in 3 Days
We recently witnessed a three day, continuous attack that targeted two domains of a well-known bank.

On the first day, the bank suffered a significant volumetric attack that lasted five to six minutes, but consumed bandwidth at a rate of dozens of gigabytes per second.

Another attack, that lasted fifteen minutes, took place on the second day, targeting the second domain of the bank. On the third day, the same domain that was targeted the previous day was hit with a long duration attack.

We could see that the first and second attacks were reconnaissance attacks, executed to evaluate which of the two domains was more vulnerable. It is clear that the second domain was more susceptible since it was hit much harder in the third attack.

In parallel, we detected that there was another short-duration spike attack that targeted one of our Telco customers.

Just two hours later, there was another attack against a large utility organization. Because of this pattern, we were able to identify that all three attacks were performed by the same attacker and could warn and better protect our customers against further attacks.

Comparing the volume of bandwidth we’ve encountered on the first day of the attacks, to a DDoS attack’s average peak size of 7.39 Gbps, as reported by SCMagazine, we can see that short-duration attacks use large volumes of traffic in short, shotgun-like bursts.

Attackers leverage these short-duration attacks to evaluate which companies and organizations are easiest to infiltrate.

We assume that this also has to do with the availability of resources. These types of attacks are more likely to come from smaller, private groups that are shorter on resources, as opposed to criminal groups or countries which have access to unlimited resources and can therefore launch long-duration attacks from day-one.

Here’s what we’ve seen over time:

Mitigation
When it comes to short-burst attacks, time is of the essence. Attacks are likely to go under the radar and leave no time to respond.

Organizations managing multiple web domains must have the ability to centralize incoming data, preferably by working with the same security vendor across all their domains.

This enables them to predict attacks by analyzing trends and patterns across their sites. Organizations should demand this capability from their security vendors, who should also be willing to use data from various customers in order to predict potential attacks on other customers, as described in the above case study.

We see a growing number of short duration attacks across our customer base. Awareness to this new pattern is key: customers typically assume that the attack is over, while this may actually be a sign for a much larger attack coming through.

In light of this new pattern using services and tools that can aggregate attack information across customers and websites is an ideal way to predict and avoid the massive DDoS attacks about to come.

Yariv Hazony is VP Product at Sentrix, which provides protection against DDOS and other attacks against web applications, www.sentrix.com


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E-Business

Firm Detected a Fivefold Surge in QR Code Phishing Attacks in the Second Half of 2025

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Kaspersky has reported a spike in phishing emails containing malicious QR codes. Detections for these jumped from 46,969 in August 2025 to 249,723 in November 2025 – a more than fivefold growth – as cybercriminals increasingly exploit QR codes, a trend that will likely continue in 2026.

Attackers use QR codes in emails more frequently because they provide a simple and cost-effective way to conceal malicious URLs, evading detection by many protective solutions.

These QR codes are often embedded directly in email bodies or, even more commonly, within PDF attachments – an evolution that both masks phishing links and encourages users to scan them on mobile phones, which may have weaker security than work PCs.

Malicious QR codes commonly appear in mass phishing campaigns as well as targeted ones. Links embedded within them may lead to:

  • Phishing forms impersonating login pages for services like Microsoft accounts or internal corporate portals, designed to steal usernames, passwords, and other credentials.
  • Fake HR notifications urging employees to review or sign documents, such as vacation schedules, or even view lists of terminated staff, ultimately directing to credential-stealing sites.
  • Fraudulent invoices or purchase confirmations in PDF attachments, often combined with vishing (voice phishing) tactics that prompt victims to call provided phone numbers to “cancel” or clarify the transaction, enabling further social engineering attacks.

These tactics exploit trust in routine business communications, leading to credential theft, account takeovers, data breaches, and financial fraud.

“Malicious QR codes have evolved into one of the most effective phishing tools, particularly when hidden in PDF attachments or disguised as legitimate business communications like HR updates.

“The explosive growth in November 2025 highlights how attackers are capitalising on this low-cost evasion technique to target employees on mobile devices, where protection is often minimal.

“Without advanced image analysis at the email gateway and safe scanning practices, organisations are left vulnerable to credential compromise and downstream breaches,” comments Roman Dedenok, Anti-Spam Expert at Kaspersky.

To defend against this escalating threat, Kaspersky recommends educating employees on cybersecurity and deploying a mail server security solution such as Kaspersky Security for Mail Server that provides trusted and secure corporate email exchange, countering spam, email-borne infections, all forms of phishing, business email compromise (BEC), QR code attacks, and other threats.


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JustMarkets Unveils Top 5 Trading Assets for 2026 Profits

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As the world markets continue into a new cycle that sees them plunging into much trouble and uncertainty, the year 2026 beckons to be one that is ridden with high uncertainty and volatility in terms of geopolitical and macroeconomic trends. Although the year may pose various threats to traders, it also comes along with unparalleled opportunities that may be leveraged to achieve trading success through various trading assets set to display notable volatility trends in the year 2026.

JustMarkets Unveils Top 5 Trading Assets for 2026 Profits

JustMarkets

From long-term fundamentals to trading dynamics, these five key assets on JustMarkets are set to continue to be at the forefront in trading in 2026.

1. Gold (XAU/USD): The Ultimate Macro-Driven Asset

The gold price in 2025 reached $4,500 per troy ounce, and it continues to be one of the most traded assets world-wide. Gold is extremely sensitive to changes in the levels of inflation, interest rate forecasts, geopolitical events, and currency exchange rate movements. The recent years have shown the ability of the gold market to provide an extremely strong bullish momentum, as well as intraday momentum.

The relevance of the market of gold in the year 2026 specifically stems from the fact that the environment surrounding the economy of the world is facing challenges associated with growth, debt, and the policies of monetary easing. Despite the falling inflation rate in the economy, the real interest rates are also expected to be pressured downward, which has traditionally translated to favorable market conditions for the price of gold. The factor of geopolitics uncertainty and tensions between specific countries also adds to the significance of the market of gold.

For traders, the market offers favorable conditions because of its high volatility regime with adequate liquidity.

2. Silver (XAG/USD): Volatility with a Dual Personality

Silver often overshadows gold, but its performance in 2025 significantly outperformed its main competitor. The precious metal briefly reached $85, making it one of the best-performing assets in 2025. While silver, like gold, is sensitive to monetary policy and market sentiment, it also enjoys strong industrial demand related to energy transition technologies, electronics, and manufacturing.

This dual nature makes silver one of the most volatile and fastest-growing precious metals and trading instruments overall. In 2026, as global growth expectations fluctuate and industrial cycles remain uneven, silver will experience sharp directional movements and prolonged periods of volatility, but will fundamentally maintain a growth trend similar to gold.

For traders seeking high volatility, silver offers even greater percentage swings than gold, making it a powerful tool for well-managed strategies, both scalping and holding positions for multiple days.

3. Oil (WTI & Brent): Trading Supply, Politics, and Policy

Oil is still among the market-sensitive commodities. The change in OPEC+ production levels, global events affecting major oil-producing nations, as well as changes in global demand can cause prices to surge within a matter of hours.

Turning the focus on the outlook for the year 2026, it seems likely that the oil market will face well-supplied conditions. However, this will not mean extremely small degrees of volatility. Events surrounding Venezuela represent yet another key source of uncertainty. Changes within US policies regarding Venezuela, the export of oil, and the political leadership of the country could represent important influences on the levels of supply, especially when the focus shifts towards the heavier grades. Yet, the possibility of a substantial recovery looks very unlikely.

Even in highly saturated markets, surprise disruptions, production policy changes, or geopolitical tensions, particularly in the Middle East, Eastern Europe, and Latin America, can cause sharp price moves. Conversely, macroeconomic growth slowdowns or money market cycles may exert pressures on demands, thereby leading to highly two-sided markets.

4. US Stock Indices (Dow 30, S&P 500, Nasdaq): Liquidity and Trend Potential

US indices continue to be key trading assets in global trading activity. The Dow Jones, S&P 500, and Nasdaq reflect US economic performance, as well as global risk appetite, capital flows, and technological leadership, primarily driven by the AI boom.

In 2026, stock markets are likely to face divergent forces. On the one hand, monetary easing is supporting valuations, while slowing economic growth, declining interest in AI, and political uncertainty are increasing volatility and the risk of a deeper sell-off. This combination often leads to strong moves, deep corrections, and renewed all-time highs.

Indices offer unrivaled liquidity, clear technical behavior, and the ability to express macroeconomic views without the risk associated with individual stocks, making them important tools for both short-term and position traders.

5. EUR/USD: The World’s Most Traded Currency Pair

EUR/USD remains the benchmark for forex trading. Its deep liquidity, tight spreads, and technical clarity make it a favorite among professional traders. More importantly, the euro reflects the balance between the world’s two most influential central banks: the Federal Reserve and the European Central Bank.

As interest rate differentials narrow and fiscal dynamics shift on both sides of the Atlantic, there’s every reason to believe EUR/USD will experience prolonged and powerful trending phases, punctuated by strong reactions to economic data and central bank signals.

In 2026, shifts in growth expectations, inflation trajectories, and political developments in both regions will keep this pair highly active, making EUR/USD a preferred option for traders who value stability, transparency, and adaptability across all trading styles.

Perfect Assets to Trade in 2026

These five markets unite their relevance on a global stage, and the responsiveness of these markets to macroeconomic and geopolitical events. Markets traded in gold, silver, oil, US indices, and the currency pair EUR/USD include the combination of markets most traders seek: deep liquidity, clear structure, and meaningful volatility.

On the JustMarkets trading platform, these instruments excel because of the optimal trading conditions offered, ensuring effective active trading. Tight spreads, fast execution of orders, as well as high leverage of up to 3000, enable traders to react swiftly to key market drivers, such as central bank statements or inflation figures, as well as geopolitical events.


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Firm Detected a Scam Exploiting OpenAI’s Teamwork Features

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Kaspersky has detected a scam tactic leveraging the OpenAI platform. Attackers are abusing OpenAI’s organisation creation and team invitation features to send spam emails from legitimate OpenAI addresses, potentially tricking users into clicking scam links or calling fraudulent phone numbers.

The spam campaign begins with attackers registering an account on the OpenAI platform. During registration, users are prompted to enter an organisation name, which can consist of any combination of symbols. Scammers exploit this by embedding deceptive text and fraudulent links or phone numbers directly into the field for organisation name itself.

Once the “organisation” is created, OpenAI provides an option to “invite your team,” allowing the input of target email addresses of victims. When invitations are sent, they originate from OpenAI’s address, making them appear fully legitimate from a technical standpoint.

Kaspersky detected several types of messages containing email threats sent in such a way. These are scam emails that promote fraudulent offers, such as adult services. Another attack angle is vishing – false notifications claiming a subscription has been renewed for a large sum: attackers instruct recipients to call a provided phone number to “cancel” the charge or take other actions that lead to further compromise. There may also be other email threats spreading via OpenAI platform.

The text that the attackers want the victims to read (highlighted in bold in the email template) is structurally inconsistent with the rest of the email template – which was originally designed to invite project collaborators. But the attackers bet on the fact that the victims would not pay attention.

“This case highlights a vulnerability in how platform features can be weaponised for social engineering email attacks. By embedding deceptive elements in seemingly innocuous fields like organisation names, scammers attempt to bypass traditional email filters and exploit user trust in reputable services.

“We urge all users to verify invitations carefully and avoid clicking embedded links without scrutiny. We also recommend brands to consider whether their online services or platforms could be abused by attackers,” comments Anna Lazaricheva, senior spam analyst at Kaspersky.

 


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