Security

Can you spot a phishing site? Take our quiz to find out.

Umbrella Team
Updated — March 6, 2020 • 1 minute read
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The role of government in content filtering

David Ulevitch
Updated — January 23, 2023 • 2 minute read
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A discussion of the role government should take in web content filtering and the dual nature of web content filtering software.

How to Identify a Spear Phish

Umbrella Team
Updated — March 18, 2020 • 2 minute read
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Proxies and Anonymizers: No Match for OpenDNS

Umbrella Team
Updated — March 18, 2020 • 1 minute read
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How to enable SmartCache for your network

Allison Rhodes
Updated — March 6, 2020 • 1 minute read
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Finally, a real solution to DNS rebinding attacks

David Ulevitch
Updated — August 31, 2021 • 2 minute read
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How you can protect against these attacks that take advantage of design flaws or weaknesses in how some Internet applications cache DNS data

Instructions for faster DNS on your mobile

Umbrella Team
Updated — August 3, 2023 • 1 minute read
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Phones, PDAs, and every other mobile device smaller than a laptop and bigger than an iPod Shuffle needs DNS for web browsing, among other things. With speedier networks, the mobile web is getting more and more useful…and speedy DNS makes the experience better.

More instructions for changing your DNS settings

Umbrella Team
Updated — March 11, 2020 • 2 minute read
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How OpenDNS learns about phishing sites

Umbrella Team
Updated — August 4, 2020 • 3 minute read
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