Three usual causes of a slow computer, and how to spot each
Microsoft blames low storage, startup apps and ageing hardware, and Apple adds short memory. These checks show which one is slowing yours.
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Researchers keep breaking the memory shuffle that stops exploits
ASLR hides code at random memory addresses so exploits miss. Researchers found it anyway by timing the CPU from JavaScript and by probing Chrome's memory.
ZDNET picks Bitdefender as the best antivirus for 2026
ZDNET names Bitdefender its top antivirus pick for 2026, but Microsoft advises against running a second antivirus alongside Windows Defender.
Triple glazing's second gap cuts heat loss further
Triple glazing adds a third pane and a second gas-filled gap, so it loses less heat than double glazing. The whole window, frame included, sets the result.
How to clear your cache in Chrome, Safari, Firefox and Edge
Clearing a cache slows one page load, but clearing cookies signs you out everywhere. Steps for four browsers, an iPhone, and one misbehaving app.
Quick Assist lets a trusted helper fix your Windows 11 PC
Quick Assist lets a friend or Microsoft support agent see and fix your Windows 11 PC remotely. Microsoft says to allow only helpers you contacted first.