Tag: microsoft 365
92 articles
Microsoft Outlook to Block MSIX Attachments in Security Push
Microsoft is bolstering security in Outlook on the web and Windows by blocking MSIX attachments, including .msix and .msixbundle file types, to protect users from potential threats. This update will be applied to the default list of blocked file types, enhancing overall security in the platform.
Nikkei Exposes Employee Cloud Account Breaches
Nikkei revealed that around 9,000 phishing emails were sent from a hijacked Microsoft 365 mailbox, adding to a string of account breaches that exposed sensitive employee and partner contact data. The breaches, which started with a Google Workspace account hack in late July, affected over 1,646 individuals, with compromised info including names and email addresses.
Nikkei Breaches Email Accounts, Exposes Data
Nikkei suffered not one, but two email breaches in just three months, exposing sensitive contact info and leaving staff and interviewees vulnerable to phishing scams. The hacks, which hit Google Workspace and Microsoft 365 accounts, allowed attackers to send thousands of malicious emails.
CSuite Phishing Targets US Businesses with Dual Microsoft 365, RMM Attacks
US businesses are in the crosshairs of a cunning phishing attack that combines Microsoft 365 session theft with remote-access tool deployment, allowing hackers to turn a single incident into widespread account compromise, fraud, and persistent system access. This dual-threat attack path puts companies at risk of devastating breaches.
Microsoft 365 Governance Gaps Expose Organizations to Risk
Most organizations think their Microsoft 365 environments are fine - until disaster strikes. But the truth is, hidden governance gaps are lurking, putting companies at risk, with 77% of global organizations experiencing at least one governance incident in the past year.
TeamFiltration Exposes Microsoft 365 Accounts via Default Passwords
A recent TeamFiltration campaign exposed 7 Microsoft 365 accounts with default passwords, highlighting a shocking vulnerability in unmanaged service accounts that can leave businesses open to attack. This incident affected over 5,700 accounts across 28 tenants, with a particular focus on Chilean retail and financial institutions.
Microsoft Disrupts EvilTokens Phishing Service, Arrests Suspects
Microsoft swooped in to dismantle the EvilTokens phishing service, a sneaky AI-powered operation that had already compromised 12,000 email inboxes across 10,000 organizations worldwide. The service, which emerged in February, was sold as a phishing kit and came equipped with a clever AI chatbot that helped scammers identify and target high-value victims.
Microsoft Axes Companion Apps, Shifts Focus to New Authentication Methods
Microsoft is phasing out its 365 companion apps - Calendar, People, and Files - and setting December 16, 2026 as the end-of-life date, after which they'll no longer function or be supported. Admins are advised to remove the apps from devices by then to ensure a seamless transition.
Microsoft 365 Sharing Risks Exposed in Enterprise Environments
Did you know that 61% of security leaders admit that access to shared files in Microsoft 365 often stays active longer than it should, leaving sensitive information vulnerable? This alarming trend highlights the hidden risks of easy cloud collaboration.
Hackers Exploit M365 Feature in Targeted Phishing Campaign
KnowBe4's Threat Lab team uncovered a massive phishing campaign, detecting 29,785 confirmed phishing emails that exploited Microsoft 365's Direct Send feature over just two months. The attacks followed a surprisingly human pattern, spiking on Mondays and Tuesdays during US business hours.
AI Deployments Outpace Permissions Reviews, Leaving Organizations Exposed
Most organizations are launching AI tools without properly assessing the risks, leaving them exposed to potential security breaches. A recent survey found that while 76% of organizations have deployed AI tools, only 43% have completed a thorough review of permissions.
Microsoft 365 Phishing Op Exposes Thousands of Credentials
A recent phishing operation exposed a staggering 5,137 records from 461 organizations, including 1,032 plaintext passwords and 474 fully authenticated Microsoft 365 sessions that could be easily exploited. This massive haul highlights the alarming vulnerability of sensitive credentials to clever phishing tactics.
Microsoft Credentials Targeted in BigBear 2 PhaaS Campaign
Security researchers just uncovered a massive phishing operation targeting Microsoft 365 credentials, with a staggering 5,137 compromised records and 3,331 unique victim IPs exposed. The researchers even gained admin access to the operation's control panel, revealing a vast network of 42 VPS nodes used to carry out the attacks.
Microsoft 365 Targets in Fake IT Call Data Theft, Extortion Scheme
Beware of fake IT calls that can trick you into giving away your Microsoft 365 login credentials - scammers are using a clever vishing scheme to steal account details and hold them for ransom. It starts with a convincing phone call from someone claiming to be from IT, directing you to a fake authentication page.
Phishing Service BigBear Exposes 258 Firms to MFA Bypass
BigBear 2.0, a sneaky phishing-as-a-service operation, has compromised 258 companies by bypassing multi-factor authentication (MFA) for Microsoft 365 users worldwide, swiping 5,137 credential records in the process. This cunning attack used an adversary-in-the-middle approach to intercept passwords, MFA tokens, and session cookies, allowing hackers to hijack authenticated sessions with ease.
Phishing Service NovaCookies Targets Organizations with 365 Session Theft
Meet NovaCookies, a sneaky phishing service that's stealing Microsoft 365 sessions from hundreds of organizations - and it's available for a low monthly fee of just $320. This subscription-based threat packages real-time session theft, making it a potent and affordable tool for cybercriminals.
Phishing Kit NovaCookies Exploits Docusign Notifications to Hijack Microsoft 365 Sessions
Meet NovaCookies, a sneaky phishing kit that's being sold for just $320 a month, and can hijack your Microsoft 365 sessions in real-time by cleverly intercepting Docusign notifications. This live adversary-in-the-middle relay captures active sessions, allowing hackers to harvest your credentials and multi-factor authentication codes.
Mirage2FA Campaign Targets 4,500 Firms, Bypasses Microsoft 365 2FA
Thousands of companies, including 4,532 unique organizations worldwide, have been targeted by the Mirage2FA campaign, a sneaky phishing-as-a-service toolkit that cleverly bypasses Microsoft 365's two-factor authentication. US-based companies are among the hardest hit, making up 63.7% of the victims.
Microsoft Bolsters Teams Security With Automated Bot Blocking
Microsoft just supercharged Teams security with a game-changing update that automatically blocks suspicious bots from crashing your meetings. Now, you can keep unwanted guests out for good, with no need for manual approval.
Microsoft Rolls Out Classic Theme for New Outlook Users
Get ready to experience Outlook like never before - Microsoft is rolling out a new Classic Theme for users of the New Outlook, bringing a coordinated visual refresh across the platform. This exciting update will be available to all users by late October, and can be easily turned on or off at any time.
Microsoft Disrupts Search Function in Microsoft 365 Apps
Some Microsoft 365 users are experiencing search disruptions in key services like SharePoint Online, OneDrive, and Outlook. The issue, affecting users connected to specific infrastructure, is limited to searching for content within these apps.
Phisher Breaches US Defense Supplier's Microsoft 365 Account
A phishing scam led to a breach of a US defense supplier's Microsoft 365 account, exposing sensitive data including customer communications, engineering docs, and potentially export-controlled tech info. The intruder gained access to mailbox contents, but the company found no evidence that the data was copied or exfiltrated.
Kali365 Exploits Microsoft Authentication in US Firms
Meet Kali365, a sneaky device-code phishing kit that's exploiting Microsoft authentication to infiltrate US firms, with over 80 public sessions compromised weekly. By masquerading as trusted services, Kali365 tricks victims into handing over access to their Microsoft 365 email, documents, and cloud resources.
Phishing Service Greatness Exploits RingCentral to Target Microsoft 365 Accounts
A recent security bulletin from RingCentral may have inadvertently given hackers a blueprint for a phishing campaign, as a notorious phishing service known as Greatness has begun targeting Microsoft 365 accounts with sophisticated attacks. Greatness, a phishing-as-a-service platform, has upgraded its tactics to include advanced threats like adversary-in-the-middle attacks and device-code phishing flows.