E-Business
ESET Researchers Spot DoubleLocker ‘Innovative’ Android Ransomware

By peter oluka
ESET researchers have spotted the first-ever ransomware misusing Android accessibility services. On top of encrypting data, it also locks the device.
Detected by ESET products as Android/DoubleLocker.A, the ransomware is based on the foundations of a particular banking Trojan, known for misusing accessibility services of the Android operating system.
However, DoubleLocker doesn’t have the functions related to harvesting users’ banking credentials and wiping out their accounts. Instead, it has received two powerful tools for extorting money from its victims.
DoubleLocker can change the device’s PIN, preventing victims from accessing their devices, and also encrypts the data it finds in them – a combination that has not been seen previously in the Android ecosystem.
“Given its banking malware roots, DoubleLocker may well be turned into what could be called ransom-bankers. Two-stage malware that first tries to wipe your bank or PayPal account and subsequently locks your device and data to request a ransom… Speculation aside, we spotted a test version of such a ransom-banker in the wild as long ago as May, 2017,” comments Lukáš Štefanko, the ESET malware researcher who discovered DoubleLocker.
Distribution
DoubleLocker spreads in the very same way as its banking parent does. It is distributed mostly as a fake Adobe Flash Player through compromised websites.
Once launched, the app requests activation of the malware’s accessibility service, named “Google Play Service”. After the malware obtains the accessibility permissions, it uses them to activate device administrator rights and set itself as the default Home application, in both cases without the user’s consent.
“Setting itself as a default home app – a launcher – is a trick that improves the malware’s persistence. Whenever the user clicks on the home button, the ransomware gets activated and the device gets locked again. Thanks to using the accessibility service, the user doesn’t know that they launch malware by hitting Home,” explains Štefanko.
Locking Both Device And Data
DoubleLocker, once executed on the device, creates two reasons for the victims to pay.
First, it changes the device’s PIN, effectively blocking the victim from using it. The new PIN is set to a random value which the attackes neither store nor send anywhere, so it’s impossible for the user or a security expert to recover it. After the ransom is paid, the attacker can remotely reset the PIN and unlock the device.
Second, DoubleLocker encrypts all files from the device’s primary storage directory. It utilizes the AES encryption algorithm, appending the extension “.cryeye”. “The encryption is implemented properly, which means that, unfortunately, there is no way to recover the files without receiving the encryption key from the attackers,” says Štefanko.
The ransom has been set to 0.0130 BTC (approximately USD 54 at time of writing) and the message highlights that it must be paid within 24 hours. However, if the ransom is not paid, the data will remain encrypted and will not be deleted.
How To Get Rid Of It?
In the ransom note, the user is warned against removing or otherwise blocking DoubleLocker: “Without [the software], you will never be able to get your original files back”.
To prevent unwanted removal of the “software”, the crooks even recommend disabling the user’s antivirus software.
“Such advice is irrelevant: all those with a quality security solution installed on their devices are safe from DoubleLocker,” explains Štefanko.
The only viable option to clean the device of the DoubleLocker ransomware is via a factory reset.
For rooted devices, however, there is a method to get past the PIN lock without a factory reset. For the method to work, the device needed to be in the debugging mode before the ransomware got activated.
If this condition is met, then the user can connect to the device by ADB and remove the system file where the PIN is stored by Android. This operation unlocks the screen so that the user can access their device. Then, working in safe mode, the user can deactivate device administrator rights for the malware and uninstall it. In some cases, a device reboot is needed.
As for the data stored on the device, there is no way to recover it, as mentioned earlier.
“DoubleLocker serves as just another reason for mobile users to have a quality security solution installed, and to back up their data on a regular basis,” concludes Štefanko.
E-Business
Firm Detected a Fivefold Surge in QR Code Phishing Attacks in the Second Half of 2025

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.
E-Business
JustMarkets Unveils Top 5 Trading Assets for 2026 Profits

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
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.
E-Business
Firm Detected a Scam Exploiting OpenAI’s Teamwork Features

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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