• CEOs are excited about AI, but increasingly worried about cybersecurity, KPMG US CEO Tim Walsh said.
• “The cyber risks have just elevated to places that we’ve never seen before," he told Business Insider.
• KPMG is creating a cyber-defense business built around AI.

Corporate leaders tend to be enthusiastic about AI's potential — and increasingly concerned about the cybersecurity challenges the technology brings.

Tim Walsh, CEO and chair of KPMG US, said the worries come up in nearly every meeting he has with fellow leaders, as AI gives bad actors new ways to try to breach corporate defenses.

"The cyber risks have just elevated to places that we've never seen them before," he told Business Insider.

Walsh pointed to the Hugging Face incident this past summer, in which OpenAI said an AI agent bypassed controls during an internal cybersecurity evaluation and accessed parts of the open-source AI platform's systems.

There isn't currently a defensive wall, he said, that's capable of rebuffing every cyber threat. He said KPMG is working with the frontier AI model developers and others on further protections.

The goal is to help the Big Four firm protect its business, and its clients' businesses, Walsh said, adding that he sees it as a potential opportunity worth more than $1 billion.

'Cyber insecurity' fears

Unease about AI and cyber threats showed up in a recent KPMG US survey of 400 CEOs at major US companies. While leaders reported confidence in AI's potential, cybersecurity was the concern they identified most often.

Eighty-five percent said cybercrime and "cyber insecurity" could affect their company's prosperity over the next three years — more than said the same about inflation, geopolitical tensions, the pace of technological change, or other risks.

Cybersecurity was also the most commonly cited challenge to implementing AI. It topped ethical questions, data readiness, cost management, and translating AI spending into measurable returns.

Leaders said they were particularly concerned about identity theft and data privacy, vulnerability to cyberattacks, and fraud detection and prevention. Nearly half said they planned to increase cybersecurity investment over the next three years, citing threats including AI-powered social engineering, AI-assisted phishing or malware, and data and privacy risks tied to AI agents.

A growing need to defend and check AI

The concern is shaping the kinds of work the firm wants to do for clients.

Walsh said KPMG is building what he described as a managed cyber-defense business centered on AI, meant to serve as a "shield and defense mechanism" for companies. KPMG already has a cybersecurity business, he said, though this would be a different offering built around AI.

The company also sees a growing need to check whether the AI systems organizations deploy are doing what they are supposed to do. KPMG already helps clients assess AI-related controls and governance. Walsh said the firm is developing additional services to verify that AI agents are operating as intended and give investors and others confidence that companies can control them.

"Trust around AI is a real thing," he said.

Zohran Mamdani has places to be.

At 35, the mayor of New York City knows how to catch — and keep — people's attention. It's tempting to think the key to Mamdani's success is Instagram, but the secret sauce of his leadership isn't just a social media machine. It's a man criss-crossing the five boroughs with a portable podium and the occasional sugar-free Red Bull.

To better understand how his in-person ubiquity shapes public perception, Business Insider spent the summer tracking the mayor's daily schedule. From May 1 to August 31, Mamdani had 249 listed appointments, 170 of which were held in public. Eighty-one of these were in community spaces such as classrooms, libraries, parks, apartment buildings, tennis courts, places of worship, and restaurants.

Another 50 were government events at emergency preparedness centers and police precincts. With the exception of Staten Island — which Mamdani visited three times — his appearances dotted the city. He spent the most time in Manhattan with 85 events, followed by Brooklyn (35), the Bronx (26), and Queens (21). He made few appearances in City Council chambers and other traditional political arenas. At the mayor's home, Gracie Mansion, there were no press conferences. Instead, Mamdani hosted 10 cultural receptions, pickup soccer games, and religious celebrations.

At a time when C-suite bigwigs are delivering bad news via canned memo, and politicians are mediating their message through glossy election mailers, dozens of political analysts, media strategists, historians, and people in the mayor's orbit say that Mamdani's man-about-town style stands out.

What makes Mamdani a lesson in charisma is his ability to combine four important factors: physical presence, personal authenticity, political messaging, and active participation, a review of his nearly first year shows.

He's able to be in on the joke — poking fun at his omnipresent suit by jumping into a pool, tie and all — while still getting his message across. They're a regular part of his schedule, rather than a surprise one-off that feels like it was cooked up by a communications staffer. It's not an easy balance to strike, but the mayor's in-person events lay out a road map for other leaders.

Showing up doesn't solve all problems, and nine months into his tenure, the mayor has met his fair share of critics. Glad-handing with a few CEOs and small business owners doesn't replace the need to attract investment from blue-chip companies and buzzy startups. Despite his push for affordability, he has yet to substantially lower residents' household bills.

But his supporters and critics agree that the mayor has a natural talent for connection, turning mundane events into meaningful moments with constituents. He fuses human connection and mass media to turn heads in the cutthroat attention economy. Whether it's cheering on the Knicks in the nosebleeds of Madison Square Garden or ordering an egg and cheese with jalapeño at a Queens bodega, Mamdani knows how to see and be seen.

Between a crammed row of treadmills and elliptical machines, Mamdani straightened his blazer and stepped up to the microphone. The East Village recreation center smelled like sweat, dust, and takeout coffee. Events like this one in early July, which touted new rules to make it easier for people to cancel subscriptions, are a signature way to promote his agenda. As the images circulated online, New Yorkers could imagine Mamdani on the rowing machine next to them, complaining about how hard it was to get out of a pesky membership.

All mayors go to ribbon-cutting ceremonies and attend parades. Mamdani's retail politics events also include everyday New Yorkers in everyday settings. He gave only a few keynote speeches this summer, but he found time to visit three senior centers, seven schools, and a soccer watch party at Rikers Island. A sentiment expressed by dozens of residents is that, regardless of their personal politics, they respect Mamdani for coming to their neighborhoods. One Central Park halal vendor says he feels like the mayor understands how pricey food can be these days. A Staten Islander who has met Mamdani — and filmed a video with him — was shocked that he could rattle off deep-cut Sri Lankan cricket trivia.

Debbie Saslaw runs the video production company Melted Solids alongside Anthony DiMieri. The pair are the brains — and lenses — behind some of Mamdani's viral videos. While much has been said about the mayor's knack for social media, Saslaw says his penchant for physical presence is crucial to making his short-form videos effective. Saslaw recalls a day early in the mayoral campaign when they visited a park to chat with picnickers. She figured no one would want to speak with an underdog candidate on what turned out to be a very rainy afternoon.

"People were honking out from their cars, and one guy waved from his apartment window," she tells me. "People were stopping their bikes — there was a bike pileup."

Moments like that become social media content: More than 80 in-person events this summer earned posts on the NYCMayor Instagram — largely photos and videos of Mamdani with regular people. Only a handful of posts were policy announcement graphics or highly produced mini-documentaries.

Some critics say the energy the mayor puts into engagement is a distracting gimmick that diverts attention from controversial policies or a lack of meaningful accomplishments. With hundreds of events over the summer, Mamdani's time to negotiate and pass policies within City Hall is limited. At least on the books, his schedule shows he met with local political leaders a handful of times between May and August. On the other hand, for all but 25 of 122 days, he attended at least one public event.

The city's business leaders, in particular, say Mamdani hasn't spent enough time learning from corporate advisors, economists, or local shop owners. Of Mamdani's 249 listed events, six were with CEOs or Wall Street execs, and only a few were with small business owners. By comparison, he met childcare and day care workers more than a dozen times. While former communications leaders for Bill de Blasio and Eric Adams say past mayors have also limited their time in boardrooms and offices ("their job is to be out there," one tells me), some small-business owners feel they're getting short shrift from Mamdani as well. A vendor near one of his planned city-owned grocery stores says she feels left out of the conversation, "You're going to spend all this money on building this new infrastructure, and the basic things that we have been asking for don't get done."

Those less convinced by Mamdani's tactics say the resources the Mayor's Office pours into communications are a smokescreen. Mark Jaffe, a founder of NYC's Multicultural Business Coalition who is suing the administration over its city-run grocery store initiative, says that while Mamdani "gets people's attention," the substance is coming up short.

"He knows the issues," Jaffe says. "He just doesn't come up with good plans that can actually solve them through jobs and capitalism."

Mamdani's propensity for kissing babies and waltzing into bars has both practical and historical grounding. As people spend more of their lives conversing with AI customer service bots, half-engaged with corporate Zoom meetings, and watching political attack ads between TV episodes, they're starving for more intimate, authentic connections. When C-suite leaders and politicians try to connect with people, it can yield limited success. Whether it's a fast-food CEO taking tiny bites out of a burger and calling it a "product," tech execs looking unconvincing as they sip beer, or politicians filming stilted selfie videos, attempts to add a personal touch through a mediated platform can leave people cold.

"We are, at our core, social creatures who need to connect, and we did not evolve to connect only digitally," Amy Edmondson, a professor of leadership and management at Harvard Business School, tells me.

Mamdani is trying to resurrect a bygone era for New York City politicians — with his own new-school sheen. Mayoral calendars aren't publicly posted, and changes in record keeping, news coverage, and technology make comparisons imperfect. But historians and communications directors under previous administrations say that recent mayors struggled with the perception of being distant from their constituents.

A longtime New Jersey homeowner, Eric Adams drew criticism for his international travel and trips to exclusive nightclubs. Michael Bloomberg's billionaire status made him less relatable to regular people, NYC historian Kevin Draper tells me, even when he made an effort to meet residents around town. Bill de Blasio had a Mamdani-esque focus on affordability but, based on his dismal approval ratings throughout his mayoralty, failed to connect on a personal level. Former communications directors for de Blasio and Adams say they both had their go-to outer-borough neighborhoods, but neither had Mamdani's widespread reach.

Timing was a factor: Those two leaders tended to work later into the night, whereas the current mayor makes stops around the city much earlier. Draper says youth is also a leg up that Mamdani has over his predecessors. My analysis shows that Mamdani attended at least one event on 97 of his 122 days this summer, averaging more than two per day, and a third of these were out in the community. On busy days, he made up to seven stops.

"He has had a longer honeymoon than any other mayor," José Bayona, who worked under the Adams and de Blasio administrations, says with a laugh. "I can tell you that."

Mamdani has said he emulates Depression-era Mayor Fiorello La Guardia, who launched an early version of city-owned stores and primarily focused messaging toward the working class with his "Talk with the People" radio program. He also evokes Ed Koch, the relatively moderate mayor who dominated the 1980s, who was known for strolling the streets and riding the train, asking residents, "How'm I doin'?" The style's lineage stretches back to the 19th century, when candidates and elected officials would drum up support by giving speeches and meeting the public in their saloons and town squares. Members of Tammany Hall, a highly corrupt but popular New York City political machine, focused on in-person interactions with the working class.

There are, of course, challenges to the mayor's attempts at everyman charisma. On a practical level, it's much harder for Mamdani to show up at a sports bar these days without serious planning and a security detail. And even with sharp messaging and the reputation for popping up in unexpected places, the complexities of policy rollout and city politics have slowed his attempts to transform New York.

Mamdani is early enough in his term that he can get away with having big plans that haven't been realized, riding high on a banner sports summer and pothole politics. But as he approaches his second year in office, his constant presence outside City Hall and prolific digital footprint could become more of a liability than an asset. As Edmondson puts it: "There's always a risk of disappointment when people believe that, in your back pocket, you have a magic wand."

Interactive graphic by Randy Yeip.

• Covista CEO Steve Beard treats the chief of staff role as a rotating post, not a permanent job.
• He said the first one he hired told him he talked too much in meetings — feedback he welcomed.
• The downside, Beard said, is having to replace someone performing at the peak of their abilities.

Most chiefs of staff don't stick around for very long. Covista CEO Steve Beard sees that as a feature, not a bug.

Since taking the helm at the healthcare education giant five years ago, Beard has appointed four chiefs of staff, with a few months of overlap between hires to preserve continuity. He treats the role as a leadership rotation rather than a permanent job, bringing in people with backgrounds that match his evolving needs.

His first chief of staff specialized in finance, the second in strategy, the third in technology, and the fourth, who started recently, in management consulting.

"Each of my chiefs of staff has looked different because I've been in a different place in my own journey at the time that they've come on board," Beard told Business Insider. "It really is defined by the leader and the moment."

The median tenure for chiefs of staff is 2.3 years, a length that reflects both the job's intensity and its potential as a springboard to more senior positions, according to a 2024 report from McKinsey.

That is also roughly the amount of time Beard said he considers appropriate for the job — and long enough for those in it to advance their careers afterward. His first chief of staff moved into a CFO role at one of Covista's universities, and the second became a vice president overseeing the company's business-to-business operations and clinical partnerships. The third is preparing to become a vice president of enterprise pricing.

"It takes about one year to really get in a groove," said Beard. "By the time you're approaching three years, that's a pretty grueling pace."

The demands of the job help explain why. Beard oversees five educational institutions that train students for careers in healthcare. Most weekdays, he said he's at his desk around 7 a.m. and leaves after 6 p.m. His chief of staff works closely with him throughout, starting with a 15-minute meeting to review priorities and prepare for what's ahead. They stay in close contact when apart and occasionally travel together.

Beard said a key part of the job for his chiefs of staff is to give him honest feedback about how he interacts with his executive team, clients, investors, and others. He recalled how his first chief of staff told him he was talking too much in leadership meetings. He began holding back, allowing others to share their views before weighing in.

"I found that I actually learned more by listening to the conversation amongst the team," said Beard.

When he's ready to bring on a new chief of staff, Beard said he taps a variety of channels to identify potential candidates, including his own network, traditional search, and Covista's existing employee base. Of the four he's hired, two came from within the company.

Beard said he looks for people who can influence without relying on authority, build strong relationships, bring a fresh perspective, and move comfortably between strategy and execution.

Once on board, Beard said he asks his new right-hand advisors to take a fresh look at his routine and suggest modifications or improvements. One reorganized his executive team's meeting cadence, another introduced AI into office workflows, and his newest chief of staff is leading a five-year retrospective on his tenure to help shape the company's next chapter.

Beard's revolving-door strategy isn't without drawbacks. He said replacing a chief of staff means giving up someone who is performing at the peak of their abilities and starting over with someone who needs time to build the same rapport and shorthand.

"You do have to slow down to speed up a bit," he said.