Microsoft has revamped the Internet Explorer mode in its Edge browser following reports of hacker exploits in August 2025. The company acted to block attackers who used social engineering and zero-day flaws to gain unauthorized access to user devices.
What Happened in the August Attacks
Attackers targeted Microsoft Edge users by tricking them into switching to IE mode. They started with fake websites that looked official and convinced people to reload pages in this legacy mode.
Once in IE mode, hackers exploited unpatched bugs in the Chakra JavaScript engine. This allowed remote code execution and privilege escalation, giving them full control over devices.
Reports show these attacks bypassed modern security in Edge by reverting to older Internet Explorer tech. Victims could face malware installation, data theft, or network breaches.
Security experts noted the risks of legacy features in current browsers. Microsoft confirmed the threats through credible intelligence and moved quickly to respond.
How Microsoft Responded with Updates
Microsoft removed easy access to IE mode for everyday users. Now, people must enable it site by site through browser settings for better control.
The update focuses on business needs while cutting casual risks. Organizations can still use IE mode for old apps, but with stricter rules.
In July 2025, Edge got a security patch fixing CVE-2025-10585, an exploited Chromium flaw. This built on ongoing efforts to secure the browser.
The revamp includes audits for genuine use cases. Microsoft aims to balance compatibility with strong protection against evolving threats.
Experts praise the move as a step toward safer browsing. It reduces the attack surface without dropping support for legacy sites.
Key Risks of Legacy Browser Features
Legacy modes like IE in Edge help run old web apps smoothly. Yet, they carry risks from outdated code that hackers love to target.
Common exploits involve social engineering, where users get fooled into actions that expose systems. In these cases, spoofed sites played a big role.
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- Social engineering tricks users into enabling vulnerable modes.
- Zero-day exploits hit unpatched software flaws.
- Privilege escalation lets attackers gain higher access levels.
- Remote code execution runs harmful code from afar.
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Such features remind us of past browser wars and security gaps. Modern browsers like Edge use Chromium for better defenses, but legacy ties linger.
Users should watch for unusual prompts on websites. Staying updated and cautious helps avoid these traps.
Impact on Users and Businesses
Everyday users see fewer risks now with restricted IE mode access. This change mainly affects those who rarely need legacy support.
Businesses relying on old apps must adjust policies. They can set up allowed sites in Edge settings to keep workflows running.
| Aspect | Before Update | After Update |
|---|---|---|
| Access Method | Quick buttons or flyouts | Settings > Default Browser, site-specific |
| Security Level | Higher exploit risk | Reduced with explicit enabling |
| User Impact | Easy for casual use | More steps for safety |
| Business Use | Broad access | Auditable and controlled |
The shift encourages migration to modern web standards. Many firms plan to phase out IE-dependent tools over time.
Overall, this protects millions of Edge users worldwide. It aligns with trends in cybersecurity, where proactive fixes prevent widespread harm.
Broader Lessons for Browser Security
This event highlights the dangers of backward compatibility in tech. As browsers evolve, old code becomes a weak link for attackers.
Similar issues hit other platforms, like recent zero-days in Chrome. Industry watchers urge regular updates and user education.
Microsoft continues to invest in Edge security. Features like hardware isolation and bug bounties help stay ahead of threats.
Looking ahead, expect more tweaks to legacy support. The goal is a secure, seamless experience for all.
What do you think about these changes? Share your thoughts in the comments and spread the word to keep others informed.
