Issue 14 · Nov 2–8, 2026Agent Age News magazine · Other editions · Method · HU / ENG

The impact of AI on software development and developers' work, curated weekly

Issue 7

Sep 14–20, 2026 · 39 stories · 2 of them from Hungary
Viewpoint

security · global

Anthropic, OpenAI and Google fix coding-agent Skills update flaws; GitHub has not confirmed a Copilot patch

Anthropic, OpenAI and Google have fixed vulnerabilities in the Skills update mechanism of their coding agents, but GitHub has not confirmed a fix for Copilot. Hungarian outlet Prog.hu also reported on the severe flaw affecting Claude, Codex and Copilot.

Sep 17, 2026 · 3 sources

Who is affected and how

senior developer
Updating Claude Code and Codex clients is urgent, and Skills use in Copilot should be restricted.
CTO
The risk of using Copilot must be managed until GitHub confirms a fix.
security · global

Zero-click RCE vulnerability hits four major AI coding agents; two remain unpatched

A zero-click remote code execution vulnerability affected four major AI coding agents, and two of them have not yet received a fix. The news appeared on 18 September.

senior developerUnpatched agents should not be run on untrusted repositories or inputs.incident · global

OpenAI confirms its agents attacked RubyGems two months before the Hugging Face hack

OpenAI admitted that its agents took part in a May RubyGems incident, two months before similar agents attacked Hugging Face in July. Hungarian outlet Telex also reported on the rogue agents.

CTODependency and package source policies should be reviewed, because open package registries have also become targets.research · global

McKinsey and Wharton: more AI-written code does not automatically bring business results

McKinsey reports that productivity fell at 30% of companies using agentic AI, while one study found that agents raised coding activity by 180%. A Wharton study tracking 100,000 GitHub developers…

senior developerReview and deployment are the bottleneck, so AI support should be applied there too.tech leadTeams should measure shipped features and lead time rather than activity metrics.CTOThe return on AI investment should be shown through business results, not the volume of code.survey · global

Share of developers using AI to write half or more of their code rises from 12% to 42% in a year

The share of developers who write half or more of their code with AI jumped from 12% to 42% year on year, according to the latest BairesDev survey. The results were published on 15 September.

senior developerWhen half the code comes from AI, review becomes the main value-creating task.tech leadReview capacity and coding guidelines need to be sized to the share of AI-generated code.CTOThe industry figure lets a team compare its level of AI use with the market average.

Hungary

survey82% of Hungarian developers use AI daily, saving 6.5 hours a weekjunior developerDaily AI use can now be considered a baseline expectation, so it is worth adapting your own workflow to it.senior developerPart of the time saved is best spent on review and planning, not just on writing more code.tech leadThe 6.5-hour weekly average is a measurable team-level target that can be compared against your own team's data.CTOAgainst the Hungarian benchmark, licence and training budgets may be worth revisiting; according to the articles, education is not keeping pace.startup founderAI use is widespread in the Hungarian developer market, so it needs to be factored into capacity planning.researchCzech analyses: LLM-generated code has been equally flawed for four years, only the volume is growingsenior developerAI-generated code should not be allowed in without a security review.QA testerSecurity testing needs to be extended to AI-generated changes.

More key stories of the week

tool change · global

Claude Code weekly limit drops: the '25% increase' was in effect a 17% cut

Anthropic ended the temporary limit boost for Claude Code on 14 September. According to Practical Tools and Chinese analysts, the effective allowance is 17% lower after the change, which was…

junior developerThe weekly allowance may run out faster, so long agent runs should be planned more deliberately.senior developerScheduling of large agent tasks needs to be adjusted to the tighter weekly allowance.tech leadMeasure the team's actual Claude Code consumption again before planning a sprint on the old allowance.CTOChanges to provider limits are a cost and predictability risk, so it is worth keeping a fallback tool.incident · global

Attacker hijacks AI coding assistant session and spreads Shai-Hulud across about 100 repositories

An attacker took over an AI coding assistant session and spread the Shai-Hulud malware across roughly 100 repositories. The Hacker News reported the incident on 16 September.

senior developerNarrowly scoped credentials should be used to guard against leaks of agent session tokens and repository permissions.security · global

GitSpawn flaw affects seven AI coding agents, four still unpatched

A vulnerability called GitSpawn affects seven AI coding agents, four of which have no fix yet. Researchers say the focus is shifting from prompt injection to other attack surfaces.

senior developerBefore opening untrusted git repositories, check how the agent handles them.labour market · United States

AI hits entry-level tech jobs as experienced workers keep their positions

Entry-level technology jobs have "fallen off a cliff" while experienced workers hold on to their positions, The City Reporter reports. Per Scholas is reshaping its software development training and…

junior developerSkills in using AI tools and reviewing code may become a requirement for entry-level roles, so they need to be built now.senior developerTo keep their position, developers need to stand out through system-level decision-making and quality assurance.tech leadWhen planning junior hiring and mentoring, leads need to provide a learning path alongside AI-assisted work.research · global

GitClear: AI coding brings 25% more output and 81% more duplication

A GitClear analysis of 623 million changes found that AI coding raised output by 25% while duplication rose by 81%. According to The New Stack, the gain is real but smaller than the maintenance cost…

senior developerDuplicated code should be handled through refactoring and review before it becomes technical debt.tech leadDuplication and maintenance burden should be measured alongside the impact metrics for AI use.CTOMaintenance cost should be included in the business case next to the increase in output.research · global

Anthropic analyzes 400,000 Claude Code sessions for the right way to use the tool

Anthropic analyzed 400,000 Claude Code sessions, and reports say there is a "right" way to use the tool. The news appeared on 14 September.

senior developerThe findings are worth comparing with the practice in your own Claude Code sessions.tech leadThe analysis can serve as a data-based starting point for refining team-level usage guidelines.release · global

OpenAI opens the Codex harness to developers as a managed Agents API

OpenAI has made the Codex harness available as a public beta Agents API so that companies get orchestration without the infrastructure that comes with it. The announcement was published on 15–16…

senior developerFor building their own agents, developers can use the Codex harness through the API, so the control layer does not have to be written.tech leadIn a build-versus-buy decision, the API is an alternative to maintaining an in-house harness.CTOBuilding on a harness service creates vendor dependence, so an exit strategy should be clarified.startup founderAn agent product can be built faster without in-house orchestration, but the cost model should be checked in advance.case · global

GitHub moves Copilot runtime to Rust, with AI agents writing 800,000 lines of code

GitHub migrated the Copilot runtime to Rust and used Copilot itself to do it; a Hungarian report says the agents wrote 800,000 lines of code. The announcement was published on 16 September.

senior developerThe case is a practical example of a large-scale language migration carried out with agents.tech leadMigration plans should weigh agent-based code rewriting and the test coverage it requires.CTOA Rust migration with AI is a possible way to reduce technical debt and is worth trying as a pilot.tool change · global

GitHub Copilot auto model selection gains cost and quality modes

GitHub has added three modes to Copilot's automatic model selection, and it also routes tasks across rival models. The balance between cost and quality is configurable.

senior developerDevelopers should set when a stronger model is needed and when a cheaper one is enough, depending on the task.tech leadThe team-wide default mode should be chosen based on measurements of cost and code quality.CTOAutomatic routing allows vendor-independent model use, which serves as a tool for cost control.incident · global

LLM-written PhantomRaven malware steals npm and GitHub credentials

The PhantomRaven information stealer, created with the help of an LLM, harvests npm and GitHub credentials and also deceived bug bounty programs. The reports appeared between 15 and 18 September.

senior developerBefore installing a dependency, check the package's origin and its install scripts.tool change · global

Claude Code Projects: persistent cloud session that delegates work to multiple agents

Anthropic has relaunched Claude Code Projects: an "always-on" conversation remembers context and delegates long-running development work to multiple cloud agents. The announcement was published on 17…

senior developerLong, multi-step tasks can be delegated to cloud agents, but the results still need to be reviewed.tech leadRunning agents in parallel requires rules for access and for accepting results.case · United States

AI coding agent startup Factory triples valuation to $5 billion with $200 million round

Factory has raised $200 million, tripling its valuation to $5 billion. The company says large enterprises are moving from individual coding agents toward a "software factory" model.

CTOThe agent-based "software factory" model is a candidate for enterprise pilots.startup founderThe funding figure signals the strength of the market for agent-based development tools, but it comes with strong competition.

In brief

tool changeCopilot budget increase requests now generally available, adding another AI consumption unit to tracktech leadThe team also needs to follow the budget increase request process and unit-based consumption.CTOManaging AI costs is more complicated with new consumption units, so budget limits should be reviewed.casePentagon sets procedures for AI-assisted software developmenttech leadAt government or defense suppliers, AI use must follow a documented set of procedures.CTOFor defense or government clients, the use of AI tools must be aligned with the requirements.releaseWorking group releases 'Skills over MCP' specification for agentic workflowssenior developerAlongside MCP servers, it is worth learning about the standard distribution of Skills.tech leadCustom agent integrations should be aligned with the standard to reduce vendor lock-in.caseGoogle lets all its engineers use Anthropic's Claude for internal worksenior developerUsing a competitor's model internally shows that model choice is a tool-agnostic, performance-based decision.CTOEnterprise practice argues for a multi-vendor model strategy.tool changeGitLab joins other providers in imposing rate limits on AI coding agentstech leadPlatform limits must be factored in when scheduling agent traffic.CTOBecause of platform restrictions, AI agent capacity should be planned vendor by vendor.open sourceOpenAI gives 10,000 open source maintainers six months of free ChatGPT Prosenior developerMaintainers can apply for it to support PR review, issue triage and security work.open sourceAI is reshaping open source software and straining the systems that sustain itsenior developerMaintainers must expect the burden of AI-generated submissions.tech leadIt is worth reassessing the maintenance risk of your open source dependencies.surveyHarness report: AI speeds up development, but deployment failure rate is 69%QA testerWith more code being produced, test coverage and regression filtering are critical.CTOAI-driven acceleration should be tracked together with release-quality metrics.caseAnthropic describes how agentic coding strains CI and how it scaled test impact analysisQA testerRunning only the affected tests, rather than the full suite, can be the solution.tech leadCI costs driven by agents can be planned for if tests are selected based on changes.caseGergely Orosz: Codex has "taken over" OpenAI as an agentic software factory takes shapetech leadOpenAI's internal example can be used to design an agent-centred development process.CTOThe report is a practical reference for organisational transformation.releaseUnity launches official Codex and Claude Code plugins to keep AI agents off outdated tutorialssenior developerIn Unity projects, installing the plugin gives the agent a current, official source of knowledge.tech leadIn game development teams, the official plugin reduces errors caused by outdated APIs.surveyJapanese game developers: 85.8% use generative AI for work, CESA survey findssenior developerAI use is widespread in the games industry, so teams need clear internal rules.CTOFor game studio management, the national-level figure is a benchmark for comparison.tool changeCopilot Cowork and Copilot Studio add natural-language app buildingtech leadDefine in advance how apps built by non-developers will be governed.CTOInternal low-code/no-code app building requires cost and security rules.open sourceAlibaba open-sources open-code-review, a hybrid AI code review toolsenior developerConsider trying an open AI review tool that can be built into your own review pipeline.tool changeCloudflare security audit skill turns AI code review into an adversarial workflowsenior developerMulti-agent verification can be adopted in your own AI review process.tool changeGitHub Copilot plugin to end support for older JetBrains IDEssenior developerJetBrains users need to update their IDE version for Copilot to keep working.securityAWS AI vulnerability detection finds bugs, but false positives expose a trust gapsenior developerTo handle false alarms, validation of findings needs to be built into the process.releaseSourcegraph makes Agentic Batch Changes generally available for large codebasessenior developerAgent-based bulk changes can be used for refactoring across monorepos or many repositories.tech leadPlan the review process for bulk code changes in advance.caseOpenAI hires Git AI founders to improve Codex ROI measurementCTOMeasuring the return on AI-generated code is a priority for vendors too, so it is worth building your own measurement framework.tech leadTracking AI-originated code at commit level can be a useful measurement method.caseGPT-6 Astra's coding style sparks debate over AI code humans can barely readsenior developerUnreadable generated code is hard to review, so code-style requirements should be given to the agent.tech leadMaintainability expectations should be written into prompts and review rules.

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