Cobalt Briefing

Updated 9 July 2026

Business IT & comms, decoded daily

The news that actually affects how you run a business in the South West — the phone switch-off, cyber threats, Microsoft 365, connectivity and AI. No jargon, no scaremongering, just the useful version with a clear “so what.”

Lead storyMicrosoft & Cloud

Windows is turning off an old security setting this month. If a login or a background job breaks, this is why.

The Windows update due on 14 July finishes a change that stops the login system trusting the weak RC4 cipher. Anything on your network still relying on it can fail without warning.

10 July 20264 min read

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Weekly Roundup · Week of 3–9 July 2026

The week in business IT & comms

The week's business IT and comms news, boiled down to what actually affects how you run your business. This week: a record telecoms fine, a

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Filter the newsroom to what matters to you — the switch-off, your security, your connection, Microsoft 365 or AI.

Microsoft & Cloud

Windows is turning off an old security setting this month. If a login or a background job breaks, this is why.

The Windows update due on 14 July finishes a change that stops the login system trusting the weak RC4 cipher. Anything on your network still relying on it can fail without warning.

10 July 20264 min read

Cyber Security

A flaw in a common website builder is under active attack. If your site runs Joomla, update it now.

US authorities flagged four actively-exploited flaws on 7 July, two of them in popular Joomla page builders. Attackers were planting backdoors within hours of the fixes.

10 July 20264 min read

Telephony & VoIP

Phone and text scams now drive more than a quarter of UK fraud losses. The fix is a habit, not a gadget.

The latest UK Finance figures put telecoms behind 17% of fraud cases but 28% of the money lost. The costly ones start with a convincing call or message.

10 July 20264 min read

Connectivity & Broadband

Ofcom just fined Virgin Media £28m for making it hard to leave. Know your own switching rights.

The regulator handed down its largest ever fine for direct consumer harm on 8 July. The behaviour behind it is a useful prompt to check the exit terms on your own contracts.

8 July 20263 min read

AI for Business

A ransomware attack was just run start to finish by an AI. The lesson is an old one.

Researchers have documented the first break-in where an AI agent did the whole job on its own. It got in through software nobody had patched since 2025.

4 July 20263 min read

A glowing security shield with a keyhole sitting on a dark network appliance, cracked down the middle with orange streams of light and data particles leaking out, on a deep purple field, representing sensitive data escaping a vulnerable remote-access gateway.

Cyber Security

Another Citrix remote-access flaw is out. Patching your gateway can't wait.

A new NetScaler vulnerability disclosed on 30 June lets an attacker read the memory of an unpatched remote-access gateway. That's the kit sitting between the internet and your network.

2 July 20264 min read

Cyber Security

A SharePoint server flaw is under active attack. If you run it on your own kit, patch now.

US authorities added CVE-2026-45659 to their known-exploited list on 1 July and gave agencies three days to fix it. It affects SharePoint you run yourself, not SharePoint Online.

2 July 20263 min read

A row of translucent desktop app tiles on a deep purple field, with one new tile carrying a glowing orange spark icon sliding into place on its own, ringed by an install-progress arc, representing an app installing automatically in the background.

Microsoft & Cloud

The Microsoft 365 Copilot app is installing itself on business PCs. You can turn that off.

Through to mid-July, eligible Windows machines running Microsoft 365 business apps get the Copilot app added automatically. It's on by default, and an admin has to opt out.

2 July 20264 min read

A bundle of aged copper telephone wires beside a rising orange bar chart and upward arrow made of glowing light, on a deep purple field, representing the rising cost of legacy copper phone lines.

The Switch-Off

Copper line prices rose again on 1 July. Staying put now has a real cost.

Openreach's wholesale copper line rental goes up another 40% today, after 20% in April, with a further 40% due in October. Doing nothing has become the expensive option.

1 July 20263 min read

$A network of glowing interconnected business nodes on a deep purple field, with a bright orange fracture at the centre rippling outward along the connecting lines, representing a cyberattack spreading through a connected supply chain.$

Cyber Security

The Jaguar Land Rover hack was Russian. The lesson still lands on smaller firms.

Investigators have pinned the most damaging cyberattack in UK history on a Russian group. You don't have to be the target to be a casualty.

30 June 20264 min read

A glowing cloud platform with floating productivity panels and an ascending orange arrow, representing Microsoft 365 subscription prices rising.

Microsoft & Cloud

Microsoft 365 prices rise on 1 July — what's going up and what isn't

Microsoft's new pricing lands on 1 July. Most business plans go up, a couple hold flat, and existing subscriptions change at renewal. Here's the plain version.

27 June 20264 min read

An old copper telephone switchboard dissolving into glowing fibre-optic strands, representing the staged move off the legacy phone network.

The Switch-Off

The switch-off won't be a 'big bang' — but the deadline still stands

Openreach says there won't be a single overnight cut-off in 2027, and the number of old lines is falling fast. The businesses left on legacy lines are the ones paying for it.

26 June 20264 min read

A digital padlock on a network grid with a single highlighted entry point, representing how cyber breaches find a way in.

Cyber Security

612,000 UK businesses were breached last year — most attacks start the same way

The government's 2026 breaches survey puts the number of affected businesses at around 612,000. The most common way in hasn't changed: a convincing email.

25 June 20264 min read

Glowing fibre-optic strands sweeping through a set of balance scales with a price tag and coins, representing the review of fibre and leased-line pricing.

Connectivity & Broadband

Ofcom is reviewing the price of full fibre and leased lines — change is due in October

Openreach wants to reset its wholesale prices for full fibre and business leased lines from October. Ofcom is checking the maths. Here's what it could mean for your connection.

24 June 20264 min read

An abstract neural network, one half brightly lit and one half dim, representing the gap between adopting AI and getting real value from it.

AI for Business

Most UK firms now use AI — the gap is between using it and getting value from it

Adoption has passed half of UK firms. But most use off-the-shelf tools, and the ones seeing real change are doing something harder. Here's what separates them.

23 June 20264 min read

A glowing protective shield and balanced scales over a stream of data files, representing UK data-protection rules and compliance.

Compliance & Data

New UK data rules are now live — every business needs a complaints process

The Data (Use and Access) Act brought in a new duty from 19 June. There's no small-business exemption, and the fines for getting marketing wrong have risen sharply.

22 June 20264 min read

A glowing countdown dial entwined with an analogue phone handset and coiled cord, representing the ticking deadline for the phone network switch-off.

The Switch-Off

The phone switch-off enters its final stretch — and staying put now costs more

Roughly 2.8 million UK lines are still on the old network being switched off by January 2027, with more than half a million serving businesses. The price of waiting is going up.

22 June 20264 min read

A glowing certification seal with a checkmark, gears and shields, representing the updated and stricter Cyber Essentials standard.

Cyber Security

Cyber Essentials just got harder to pass — here's what changed

The April 2026 update adds auto-fail rules, including a hard 14-day deadline to patch critical security holes. Good preparation matters more than ever.

22 June 20264 min read

A cloud of productivity app tiles around a glowing AI orb, representing Copilot becoming a built-in part of Microsoft 365 plans.

Microsoft & Cloud

Microsoft 365 prices change on 1 July — what to check before they do

From 1 July 2026, Copilot becomes a permanent part of the Business Standard and Premium plans rather than an add-on. Here's the plain version.

22 June 20263 min read

A voice soundwave flowing from a phone handset toward a protective shield, representing defence against AI voice-cloning payment scams.

Cyber Security

AI voice scams are aimed at your finance team — one rule stops the costly ones

Cloned-voice 'pay this now' calls are the fastest-growing fraud of 2026. The defence isn't clever technology. It's a habit.

22 June 20264 min read

Fibre-optic strands radiating across a map to glowing premises icons, representing full-fibre broadband now reaching most of the UK.

Connectivity & Broadband

Full fibre now reaches most of the UK — and copper is being wound down

New Ofcom rules took effect in April and full fibre passes most premises. If your connection has been the weak link, the ground has shifted.

21 June 20264 min read

Glowing stepping-stone blocks rising in a pathway from an orderly data grid, representing a smaller business taking its first steps into AI.

AI for Business

AI crossed the halfway line in UK business — where a smaller firm should start

More than half of UK firms now use AI in some form. The sensible move isn't to do everything. It's to start where it pays back and get your data in order first.

21 June 20264 min read

Go deeper

Guides & answers

The 2027 landline switch-off, explainedGuide

Is Cyber Essentials mandatory?Quick answer

Microsoft Copilot: is it worth it?Quick answer

Leased line vs business broadbandGuide

How to protect your business from phishingGuide

All guides & answersBrowse the library

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